We are aware of the duplicate message bug that is affecting some
groups and are investigating the problem.
If your group is experiencing this issue, please contact Customer Care
and supply the following information:
- Whether the messages are appearing multiple times in the archive or
only in email.
- Whether you are the only person experiencing the issue or whether
most people in the group are getting the duplicates
- Whether it is happening to all messages sent to the group or just
specific ones (either way, provide the message numbers in the archive
of the duplicating messages).
- Provide the full headers of 2 (or more) copies of the duplicate
The headers, in particular, are vital for us to be able to effectively
troubleshoot. This site
provides useful information on how to get headers for many different
And here is the URL for contacting Customer Care:
Thank you for your help in troubleshooting this bug and our apologies
for the duplicates to all affected groups.