I tried Thunderbird 0.4 several months ago, and it had a bug that caused it to stop checking for new mail after a while. There was a bug report made (http://bugzilla.mozilla.org/show_bug.cgi?id=227617) about it. Now I tried 0.5, and I see it still has the same problem, and that the bug is still listed as "new".
I don't see many complaints about this bug, so I assume it must be a particular configuration issue. Does anyone have any ideas what that might be? I am just checking a single POP account.
With 0.4, when it stopped checking, I could still force a manual check. With 0.5, not even that works. In either case, I must quit the program and restart it to resume automatic checking.