Comment 8 for bug 218083

Yes. Since I first posted the solution of deleting the .msf file the same problem has occurred on the machine at least a dozen times. At this point my father has abandoned using thunderbird and now does all his email online. The computer is now using 9.04 and the issue is still persistent. It would be nice if there was a fix for this since others can reproduce this issue. Thanks.

Oh, all his accounts are POP accounts, not IMAP so it's not a protocol issue either.