This frequently happens for me on Ubuntu Maverick. It only occurs in connection with my work email account though (Gmail for Business via IMAP) though, not with my private account (regular Gmail via IMAP).
** Changed in: evolution (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/317353 Title: Evolution: "Unknown Mailbox" and "UID not allowed now" when using IMAP -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs