Michele Bergonzoni put forth on 10/28/2010 11:11 AM:
I recently upgraded from 1.2.8 to 2.0.6, I am using Maildir, and Thunderbird is showing the INBOX grayed out and in italics, and does not show new messages in it (it shows messages previously downloaded). This occurs when Thunderbird is restarted (if I upgrade dovecot, TB keeps working fine until I shut it down, and at next startup it greys out the inbox). All the subfolders of INBOX work fine. Accessing with horde+imp webmail works fine. I'm using TB 3.1.6
After some traffic capturing, The first difference I see in the IMAP exchange is the answer to
6 list "" "INBOX"
Which for 1.2.8 is: LIST (\HasChildren) "." "INBOX"
and for 2.0.6 is: LIST (\Noselect \HasChildren) "." "INBOX"
What errors are in your Tbird Activity Manager? Those may be helpful.
Note that the auto update for 3.1.6 was just a day or two ago. Is the update a factor or merely coincidence? Upgrading a server component as client component simultaneously is a recipe for disaster WRT troubleshooting problems: the proverbial finger pointing.
-- Stan