Hi there. I've just upgraded my server from Lenny to Squeeze (from the OVH release). Everything went good except one thing : All the mailboxes were disabled but well ticked in the ispconfig interface. The error came from POP accounts, with thunderbird and with IMAP accounts from roundcube. That's what I did : I untick the "enable mailbox", I saved, I tick the "enable mailbox", and Saved again. Then the mailboxes worked perfectly. I just wanted to tell you that and I don't know if there's a bug about it, but if it can help someone ...