I have the same setup and have not seen that problem. Sounds like a RFI issue to me rather than a software issue. I had a RFI issue with the corded Apple mouse but have not had a problem since changing to the blue tooth Apple Magic Mouse.
You may have to add some chokes to both ends if all of the SignaLink USB connecting cables.
Wed Oct 17, 2012 3:04 am (PDT) . Posted by:
I have upgraded to fldigi 3.21.56 and am using Mountain Lion on my iMac. As soon as I hit the tune button on fldigi I get a good sig being transmitted for a second or so, then my mouse freezes on the desktop, then the system crashes and reboots. Is there a bug in the software somewhere? My interface is a SignaLink USB. It was working fine under fldigi 3.21.55 and CocoaModem. Any ideas?