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Re: YSlow plugin does not always load after reboot - Firebug or YSlow?

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  • Darren Person
    Hi Betty, Thanks for the response - please note that in the examples I ve provided, these were clean installs of Firefox followed by installing Firebug and
    Message 1 of 7 , Nov 27, 2011
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      Hi Betty,

      Thanks for the response - please note that in the examples I've provided, these were clean installs of Firefox followed by installing Firebug and YSlow and we still have the problem. Also, if you uninstall and re-install Firebug/Yslow, the problem will come back after several browser restarts.

      Please let me know if you are able to find any work arounds - there are several other people looking into this on the Firebug team as well.

      Thanks!
      -Darren

      --- In exceptional-performance@yahoogroups.com, betty tso <bettyytso@...> wrote:
      >
      > hi Darren,
      >
      > Thank you for providing detailed steps to reproduce the issue.
      >
      > We've found that user has to completely re-install FF8, latest Firebug and YSlow to make YSlow work once user updated to FF8 and latest Firebug.
      >
      > Thanks for filing the bug with Firebug; we'll also try to find a workaround from YSlow side to take care of this. Will keep you posted.
      >
      > thanks,
      > -betty
      >
      > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      > Engineering Manager, Exceptional Performance
      > 701 First Avenue, Sunnyvale, CA, 94089
      > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      > "I don't believe in the no-win scenario." - James T. Kirk from Star Trek.
      >
      >
      >
      >
      >
      > ________________________________
      > From: Darren Person <dsperson1@...>
      > To: exceptional-performance@yahoogroups.com
      > Sent: Monday, November 21, 2011 12:09 PM
      > Subject: [exceptional-performance] YSlow plugin does not always load after reboot - Firebug or YSlow?
      >
      >
      >  
      > Reported to Firebug as well: http://code.google.com/p/fbug/issues/detail?id=4970
      >
      > TEST CASE:
      > - YSlow installed an configured to autorun with each page view after page loads. Typically works when Yslow is installed within the same session or instance of firefox, however, when firefox is rebooted, yslow plugin doesn't appear to get loaded into Firebug.
      >
      > Detailed STEPS TO REPRODUCE the issue
      > - Installed Firebug & YSlow add-on into Firefox
      > - Chose Yslow "Autorun" feature - right click in status menu, "Autorun"
      > - Start Firefox and visit any webpage (notice Yslow tab in Firebug)
      > - Shutdown the browser and restart Firefox (maybe two or three times)
      > - Yslow no longer appears on the Firebug Add-on Menu nor runs.
      >
      > Expected result - Firebug should open with Yslow plugin and run upon load of default "homepage". Instead, Firebug loads and YSlow appears to be disables / doesn't run.
      >
      > I've tried this with multiple versions:
      > Browser: Firefox 8
      > Addon-on: Firebug 1.8.4
      > Addon-on: Yslow 3.0.4
      > OS: Windows 7
      > OS: Windows Server 2008
      > OS: CentOS.
      >
      > Note, this is happening after several reboots post installing YSlow / Firebug (re-start firefox several times in a row). But once it happens, it doesn't come back unless you re-install Yslow.
      >
      > When the failure happens, YSlow isn't listed in the Firebug toolbar anymore. Also, the YSlow icon in the right bottom corner of the browser shows the YSlow icon without the "YSlow" text to he right.
      >
      > I've tried this on Windows 7, Windows Server 2008 & CentOS without issue. I've even tried it on a VM at Amazon to make sure it wasn't something environmental. let me know if you are able to re-produce.
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
    • Darren Person
      Hi Betty, Has there been any update on this bug? The Firebug team has offered to assist in fixing it. http://code.google.com/p/fbug/issues/detail?id=4970 -
      Message 2 of 7 , Jan 6, 2012
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        Hi Betty,

        Has there been any update on this bug? The Firebug team has offered to assist in fixing it. http://code.google.com/p/fbug/issues/detail?id=4970 - Please see comment #9.

        Thanks!
        -Darren

        --- In exceptional-performance@yahoogroups.com, betty tso <bettyytso@...> wrote:
        >
        > hi Darren,
        >
        > Thank you for providing detailed steps to reproduce the issue.
        >
        > We've found that user has to completely re-install FF8, latest Firebug and YSlow to make YSlow work once user updated to FF8 and latest Firebug.
        >
        > Thanks for filing the bug with Firebug; we'll also try to find a workaround from YSlow side to take care of this. Will keep you posted.
        >
        > thanks,
        > -betty
        >
        > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        > Engineering Manager, Exceptional Performance
        > 701 First Avenue, Sunnyvale, CA, 94089
        > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        > "I don't believe in the no-win scenario." - James T. Kirk from Star Trek.
        >
        >
        >
        >
        >
        > ________________________________
        > From: Darren Person <dsperson1@...>
        > To: exceptional-performance@yahoogroups.com
        > Sent: Monday, November 21, 2011 12:09 PM
        > Subject: [exceptional-performance] YSlow plugin does not always load after reboot - Firebug or YSlow?
        >
        >
        >  
        > Reported to Firebug as well: http://code.google.com/p/fbug/issues/detail?id=4970
        >
        > TEST CASE:
        > - YSlow installed an configured to autorun with each page view after page loads. Typically works when Yslow is installed within the same session or instance of firefox, however, when firefox is rebooted, yslow plugin doesn't appear to get loaded into Firebug.
        >
        > Detailed STEPS TO REPRODUCE the issue
        > - Installed Firebug & YSlow add-on into Firefox
        > - Chose Yslow "Autorun" feature - right click in status menu, "Autorun"
        > - Start Firefox and visit any webpage (notice Yslow tab in Firebug)
        > - Shutdown the browser and restart Firefox (maybe two or three times)
        > - Yslow no longer appears on the Firebug Add-on Menu nor runs.
        >
        > Expected result - Firebug should open with Yslow plugin and run upon load of default "homepage". Instead, Firebug loads and YSlow appears to be disables / doesn't run.
        >
        > I've tried this with multiple versions:
        > Browser: Firefox 8
        > Addon-on: Firebug 1.8.4
        > Addon-on: Yslow 3.0.4
        > OS: Windows 7
        > OS: Windows Server 2008
        > OS: CentOS.
        >
        > Note, this is happening after several reboots post installing YSlow / Firebug (re-start firefox several times in a row). But once it happens, it doesn't come back unless you re-install Yslow.
        >
        > When the failure happens, YSlow isn't listed in the Firebug toolbar anymore. Also, the YSlow icon in the right bottom corner of the browser shows the YSlow icon without the "YSlow" text to he right.
        >
        > I've tried this on Windows 7, Windows Server 2008 & CentOS without issue. I've even tried it on a VM at Amazon to make sure it wasn't something environmental. let me know if you are able to re-produce.
        >
        >
        >
        >
        > [Non-text portions of this message have been removed]
        >
      • Adrian Yee
        Ran into this issue (it s even worse with Firebug 1.9) and put a hacky fix in since we need it to work properly with GTmetrix. Here s the ...
        Message 3 of 7 , Jan 9, 2012
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          Ran into this issue (it's even worse with Firebug 1.9) and put a hacky
          fix in since we need it to work properly with GTmetrix. Here's the
          patch we're using:

          --- yslow-3.0.4/chrome/content/yslow-firefox.js 2011-08-08
          13:15:15.000000000 -0700
          +++ yslow-3.0.4-gtmetrix/chrome/content/yslow-firefox.js 2012-01-05
          17:14:13.000000000 -0800
          @@ -112,6 +112,16 @@
          }

          if (typeof Firebug !== 'undefined') {
          + // There seems to be some sort of timing issue with YSlow and
          + // Firebug which causes an error in YSLOW.FBYSlow.init(),
          + // "YSLOW.firefox.startup():TypeError: FBL.extend is not a
          + // function". Hack around this by retrying the call to
          + // YSLOW.FBYSlow.init() if it fails.
          + if (typeof FBL.extend !== 'function') {
          + YSLOW.util.setTimer(function() {
          YSLOW.firefox.startup(wmode); }, 10);
          + return;
          + }
          +
          try {
          if (Firebug === null) {
          FBL.ns(function () {


          I'm not sure why FBL.extend isn't set up correctly sometimes and I don't
          know enough about Firebug internals to fix it properly. Hope this helps!

          Adrian

          On 01/06/12 02:57, Darren Person wrote:
          > Hi Betty,
          >
          > Has there been any update on this bug? The Firebug team has offered to
          > assist in fixing it. http://code.google.com/p/fbug/issues/detail?id=4970
          > - Please see comment #9.
          >
          > Thanks!
          > -Darren
          >
          > --- In exceptional-performance@yahoogroups.com
          > <mailto:exceptional-performance%40yahoogroups.com>, betty tso
          > <bettyytso@...> wrote:
          > >
          > > hi Darren,
          > >
          > > Thank you for providing detailed steps to reproduce the issue.
          > >
          > > We've found that user has to completely re-install FF8, latest
          > Firebug and YSlow to make YSlow work once user updated to FF8 and latest
          > Firebug.
          > >
          > > Thanks for filing the bug with Firebug; we'll also try to find a
          > workaround from YSlow side to take care of this. Will keep you posted.
          > >
          > > thanks,
          > > -betty
          > >
          > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          > > Engineering Manager, Exceptional Performance
          > > 701 First Avenue, Sunnyvale, CA, 94089
          > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          > > "I don't believe in the no-win scenario." - James T. Kirk from Star Trek.
          > >
          > >
          > >
          > >
          > >
          > > ________________________________
          > > From: Darren Person <dsperson1@...>
          > > To: exceptional-performance@yahoogroups.com
          > <mailto:exceptional-performance%40yahoogroups.com>
          > > Sent: Monday, November 21, 2011 12:09 PM
          > > Subject: [exceptional-performance] YSlow plugin does not always load
          > after reboot - Firebug or YSlow?
          > >
          > >
          > > Â
          > > Reported to Firebug as well:
          > http://code.google.com/p/fbug/issues/detail?id=4970
          > >
          > > TEST CASE:
          > > - YSlow installed an configured to autorun with each page view after
          > page loads. Typically works when Yslow is installed within the same
          > session or instance of firefox, however, when firefox is rebooted, yslow
          > plugin doesn't appear to get loaded into Firebug.
          > >
          > > Detailed STEPS TO REPRODUCE the issue
          > > - Installed Firebug & YSlow add-on into Firefox
          > > - Chose Yslow "Autorun" feature - right click in status menu, "Autorun"
          > > - Start Firefox and visit any webpage (notice Yslow tab in Firebug)
          > > - Shutdown the browser and restart Firefox (maybe two or three times)
          > > - Yslow no longer appears on the Firebug Add-on Menu nor runs.
          > >
          > > Expected result - Firebug should open with Yslow plugin and run upon
          > load of default "homepage". Instead, Firebug loads and YSlow appears to
          > be disables / doesn't run.
          > >
          > > I've tried this with multiple versions:
          > > Browser: Firefox 8
          > > Addon-on: Firebug 1.8.4
          > > Addon-on: Yslow 3.0.4
          > > OS: Windows 7
          > > OS: Windows Server 2008
          > > OS: CentOS.
          > >
          > > Note, this is happening after several reboots post installing YSlow /
          > Firebug (re-start firefox several times in a row). But once it happens,
          > it doesn't come back unless you re-install Yslow.
          > >
          > > When the failure happens, YSlow isn't listed in the Firebug toolbar
          > anymore. Also, the YSlow icon in the right bottom corner of the browser
          > shows the YSlow icon without the "YSlow" text to he right.
          > >
          > > I've tried this on Windows 7, Windows Server 2008 & CentOS without
          > issue. I've even tried it on a VM at Amazon to make sure it wasn't
          > something environmental. let me know if you are able to re-produce.
          > >
          > >
          > >
          > >
          > > [Non-text portions of this message have been removed]
          > >
          >
          >
        • Mark Abrams
          I just rebuilt (Jan 2012) a Win7 (64 Pro) installed Firefox, Firebug, and Yslow. Firebug runs - Yslow icon shows on the status bar but in Firebugs tabs, nor
          Message 4 of 7 , Jan 18, 2012
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            I just rebuilt (Jan 2012) a Win7 (64 Pro) installed Firefox, Firebug, and
            Yslow.
            Firebug runs - Yslow icon shows on the status bar but in Firebugs tabs, nor
            can I get it to run. It just transfers to the Yslow home ....




            -----Original Message-----
            From: exceptional-performance@yahoogroups.com
            [mailto:exceptional-performance@yahoogroups.com] On Behalf Of Adrian Yee
            Sent: Monday, January 09, 2012 4:32 PM
            To: exceptional-performance@yahoogroups.com
            Cc: Darren Person
            Subject: Re: [exceptional-performance] Re: YSlow plugin does not always load
            after reboot - Firebug or YSlow?

            Ran into this issue (it's even worse with Firebug 1.9) and put a hacky
            fix in since we need it to work properly with GTmetrix. Here's the
            patch we're using:

            --- yslow-3.0.4/chrome/content/yslow-firefox.js 2011-08-08
            13:15:15.000000000 -0700
            +++ yslow-3.0.4-gtmetrix/chrome/content/yslow-firefox.js 2012-01-05
            17:14:13.000000000 -0800
            @@ -112,6 +112,16 @@
            }

            if (typeof Firebug !== 'undefined') {
            + // There seems to be some sort of timing issue with YSlow and
            + // Firebug which causes an error in YSLOW.FBYSlow.init(),
            + // "YSLOW.firefox.startup():TypeError: FBL.extend is not a
            + // function". Hack around this by retrying the call to
            + // YSLOW.FBYSlow.init() if it fails.
            + if (typeof FBL.extend !== 'function') {
            + YSLOW.util.setTimer(function() {
            YSLOW.firefox.startup(wmode); }, 10);
            + return;
            + }
            +
            try {
            if (Firebug === null) {
            FBL.ns(function () {


            I'm not sure why FBL.extend isn't set up correctly sometimes and I don't
            know enough about Firebug internals to fix it properly. Hope this helps!

            Adrian

            On 01/06/12 02:57, Darren Person wrote:
            > Hi Betty,
            >
            > Has there been any update on this bug? The Firebug team has offered to
            > assist in fixing it. http://code.google.com/p/fbug/issues/detail?id=4970
            > - Please see comment #9.
            >
            > Thanks!
            > -Darren
            >
            > --- In exceptional-performance@yahoogroups.com
            > <mailto:exceptional-performance%40yahoogroups.com>, betty tso
            > <bettyytso@...> wrote:
            > >
            > > hi Darren,
            > >
            > > Thank you for providing detailed steps to reproduce the issue.
            > >
            > > We've found that user has to completely re-install FF8, latest
            > Firebug and YSlow to make YSlow work once user updated to FF8 and latest
            > Firebug.
            > >
            > > Thanks for filing the bug with Firebug; we'll also try to find a
            > workaround from YSlow side to take care of this. Will keep you posted.
            > >
            > > thanks,
            > > -betty
            > >
            > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            > > Engineering Manager, Exceptional Performance
            > > 701 First Avenue, Sunnyvale, CA, 94089
            > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            > > "I don't believe in the no-win scenario." - James T. Kirk from Star
            Trek.
            > >
            > >
            > >
            > >
            > >
            > > ________________________________
            > > From: Darren Person <dsperson1@...>
            > > To: exceptional-performance@yahoogroups.com
            > <mailto:exceptional-performance%40yahoogroups.com>
            > > Sent: Monday, November 21, 2011 12:09 PM
            > > Subject: [exceptional-performance] YSlow plugin does not always load
            > after reboot - Firebug or YSlow?
            > >
            > >
            > > Â
            > > Reported to Firebug as well:
            > http://code.google.com/p/fbug/issues/detail?id=4970
            > >
            > > TEST CASE:
            > > - YSlow installed an configured to autorun with each page view after
            > page loads. Typically works when Yslow is installed within the same
            > session or instance of firefox, however, when firefox is rebooted, yslow
            > plugin doesn't appear to get loaded into Firebug.
            > >
            > > Detailed STEPS TO REPRODUCE the issue
            > > - Installed Firebug & YSlow add-on into Firefox
            > > - Chose Yslow "Autorun" feature - right click in status menu, "Autorun"
            > > - Start Firefox and visit any webpage (notice Yslow tab in Firebug)
            > > - Shutdown the browser and restart Firefox (maybe two or three times)
            > > - Yslow no longer appears on the Firebug Add-on Menu nor runs.
            > >
            > > Expected result - Firebug should open with Yslow plugin and run upon
            > load of default "homepage". Instead, Firebug loads and YSlow appears to
            > be disables / doesn't run.
            > >
            > > I've tried this with multiple versions:
            > > Browser: Firefox 8
            > > Addon-on: Firebug 1.8.4
            > > Addon-on: Yslow 3.0.4
            > > OS: Windows 7
            > > OS: Windows Server 2008
            > > OS: CentOS.
            > >
            > > Note, this is happening after several reboots post installing YSlow /
            > Firebug (re-start firefox several times in a row). But once it happens,
            > it doesn't come back unless you re-install Yslow.
            > >
            > > When the failure happens, YSlow isn't listed in the Firebug toolbar
            > anymore. Also, the YSlow icon in the right bottom corner of the browser
            > shows the YSlow icon without the "YSlow" text to he right.
            > >
            > > I've tried this on Windows 7, Windows Server 2008 & CentOS without
            > issue. I've even tried it on a VM at Amazon to make sure it wasn't
            > something environmental. let me know if you are able to re-produce.
            > >
            > >
            > >
            > >
            > > [Non-text portions of this message have been removed]
            > >
            >
            >


            ------------------------------------

            --
            http://developer.yahoo.com/performance/
            Yahoo! Groups Links



            -----
            No virus found in this message.
            Checked by AVG - www.avg.com
            Version: 2012.0.1901 / Virus Database: 2109/4749 - Release Date: 01/17/12
          • Marcel Duran
            Please update YSlow for FF, the latest version is 3.0.9 -- Marcel Duran Sent from a mobile device ... [Non-text portions of this message have been removed]
            Message 5 of 7 , Feb 20, 2012
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              Please update YSlow for FF, the latest version is 3.0.9

              --
              Marcel Duran
              Sent from a mobile device

              On Jan 18, 2012, at 7:40 AM, "Mark Abrams" <mark@...> wrote:

              > I just rebuilt (Jan 2012) a Win7 (64 Pro) installed Firefox, Firebug, and
              > Yslow.
              > Firebug runs - Yslow icon shows on the status bar but in Firebugs tabs, nor
              > can I get it to run. It just transfers to the Yslow home ....
              >
              > -----Original Message-----
              > From: exceptional-performance@yahoogroups.com
              > [mailto:exceptional-performance@yahoogroups.com] On Behalf Of Adrian Yee
              > Sent: Monday, January 09, 2012 4:32 PM
              > To: exceptional-performance@yahoogroups.com
              > Cc: Darren Person
              > Subject: Re: [exceptional-performance] Re: YSlow plugin does not always load
              > after reboot - Firebug or YSlow?
              >
              > Ran into this issue (it's even worse with Firebug 1.9) and put a hacky
              > fix in since we need it to work properly with GTmetrix. Here's the
              > patch we're using:
              >
              > --- yslow-3.0.4/chrome/content/yslow-firefox.js 2011-08-08
              > 13:15:15.000000000 -0700
              > +++ yslow-3.0.4-gtmetrix/chrome/content/yslow-firefox.js 2012-01-05
              > 17:14:13.000000000 -0800
              > @@ -112,6 +112,16 @@
              > }
              >
              > if (typeof Firebug !== 'undefined') {
              > + // There seems to be some sort of timing issue with YSlow and
              > + // Firebug which causes an error in YSLOW.FBYSlow.init(),
              > + // "YSLOW.firefox.startup():TypeError: FBL.extend is not a
              > + // function". Hack around this by retrying the call to
              > + // YSLOW.FBYSlow.init() if it fails.
              > + if (typeof FBL.extend !== 'function') {
              > + YSLOW.util.setTimer(function() {
              > YSLOW.firefox.startup(wmode); }, 10);
              > + return;
              > + }
              > +
              > try {
              > if (Firebug === null) {
              > FBL.ns(function () {
              >
              > I'm not sure why FBL.extend isn't set up correctly sometimes and I don't
              > know enough about Firebug internals to fix it properly. Hope this helps!
              >
              > Adrian
              >
              > On 01/06/12 02:57, Darren Person wrote:
              > > Hi Betty,
              > >
              > > Has there been any update on this bug? The Firebug team has offered to
              > > assist in fixing it. http://code.google.com/p/fbug/issues/detail?id=4970
              > > - Please see comment #9.
              > >
              > > Thanks!
              > > -Darren
              > >
              > > --- In exceptional-performance@yahoogroups.com
              > > <mailto:exceptional-performance%40yahoogroups.com>, betty tso
              > > <bettyytso@...> wrote:
              > > >
              > > > hi Darren,
              > > >
              > > > Thank you for providing detailed steps to reproduce the issue.
              > > >
              > > > We've found that user has to completely re-install FF8, latest
              > > Firebug and YSlow to make YSlow work once user updated to FF8 and latest
              > > Firebug.
              > > >
              > > > Thanks for filing the bug with Firebug; we'll also try to find a
              > > workaround from YSlow side to take care of this. Will keep you posted.
              > > >
              > > > thanks,
              > > > -betty
              > > >
              > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              > > > Engineering Manager, Exceptional Performance
              > > > 701 First Avenue, Sunnyvale, CA, 94089
              > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              > > > "I don't believe in the no-win scenario." - James T. Kirk from Star
              > Trek.
              > > >
              > > >
              > > >
              > > >
              > > >
              > > > ________________________________
              > > > From: Darren Person <dsperson1@...>
              > > > To: exceptional-performance@yahoogroups.com
              > > <mailto:exceptional-performance%40yahoogroups.com>
              > > > Sent: Monday, November 21, 2011 12:09 PM
              > > > Subject: [exceptional-performance] YSlow plugin does not always load
              > > after reboot - Firebug or YSlow?
              > > >
              > > >
              > > > Â
              > > > Reported to Firebug as well:
              > > http://code.google.com/p/fbug/issues/detail?id=4970
              > > >
              > > > TEST CASE:
              > > > - YSlow installed an configured to autorun with each page view after
              > > page loads. Typically works when Yslow is installed within the same
              > > session or instance of firefox, however, when firefox is rebooted, yslow
              > > plugin doesn't appear to get loaded into Firebug.
              > > >
              > > > Detailed STEPS TO REPRODUCE the issue
              > > > - Installed Firebug & YSlow add-on into Firefox
              > > > - Chose Yslow "Autorun" feature - right click in status menu, "Autorun"
              > > > - Start Firefox and visit any webpage (notice Yslow tab in Firebug)
              > > > - Shutdown the browser and restart Firefox (maybe two or three times)
              > > > - Yslow no longer appears on the Firebug Add-on Menu nor runs.
              > > >
              > > > Expected result - Firebug should open with Yslow plugin and run upon
              > > load of default "homepage". Instead, Firebug loads and YSlow appears to
              > > be disables / doesn't run.
              > > >
              > > > I've tried this with multiple versions:
              > > > Browser: Firefox 8
              > > > Addon-on: Firebug 1.8.4
              > > > Addon-on: Yslow 3.0.4
              > > > OS: Windows 7
              > > > OS: Windows Server 2008
              > > > OS: CentOS.
              > > >
              > > > Note, this is happening after several reboots post installing YSlow /
              > > Firebug (re-start firefox several times in a row). But once it happens,
              > > it doesn't come back unless you re-install Yslow.
              > > >
              > > > When the failure happens, YSlow isn't listed in the Firebug toolbar
              > > anymore. Also, the YSlow icon in the right bottom corner of the browser
              > > shows the YSlow icon without the "YSlow" text to he right.
              > > >
              > > > I've tried this on Windows 7, Windows Server 2008 & CentOS without
              > > issue. I've even tried it on a VM at Amazon to make sure it wasn't
              > > something environmental. let me know if you are able to re-produce.
              > > >
              > > >
              > > >
              > > >
              > > > [Non-text portions of this message have been removed]
              > > >
              > >
              > >
              >
              > ------------------------------------
              >
              > --
              > http://developer.yahoo.com/performance/
              > Yahoo! Groups Links
              >
              > -----
              > No virus found in this message.
              > Checked by AVG - www.avg.com
              > Version: 2012.0.1901 / Virus Database: 2109/4749 - Release Date: 01/17/12
              >
              >


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