I have the same problem since today. I did not update for at least a couple of days, Thunderbird version is 2.0.0.21 (20090318) on Kubuntu 8.04. I have no extensions.
Using ISP for mail, his pop3 and imap servers (pop3.amis.net, smtp.amis.net) First mail I downloaded just showed wrong content (it's probably the first mail I received on this account, from 2004). I sent a couple of tests to myself, all show the same old wrong content. Registration mail for this site got downloaded 4 times, although on webmail there is only 1 copy. I did however pressed get mail button 6 or 7 times (every 5-10 sec). And even that failed to show for approx. 1 min, until high disk activity stopped. All 4 mails show the same content - that same old mail, that i do not even seem to have anymore. I'm not out of disk space (over 10 G free). AND - after approx. 10 minutes, mail I receive is GONE from thunderbird. Not is trash, just gone. I have no filters that could do that (no rules match that regular mail I got, test mails I sent to myself, and Launchpad - complete your registration mails. Only have 3 Launcpad mails left right now... -- new downloaded email shows wrong content https://bugs.launchpad.net/bugs/335278 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs