Seems like the problem was in IMAP server which wasn't answering with BODY reply when thunderbird was requesting HEADER and BODY in one request.
-- Thunderbird constantly polls on unix socket, slow loading of new messages https://bugs.launchpad.net/bugs/673497 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
