> I never have these problems with thunderbird and I connect to multiple IMAP > servers with multiple folders -- several of them very large. The IMAP servers > in question are running Courier-IMAPd
Me either. I am constantly connected to 4 imap servers, with 2 thunderbird clients. I irregularly use mutt where I will get a locking error when connecting but I have only a few hundred MB's worth of mail on each of the accounts. I don't use a windows box for reading email so it seems to me this might be related to the windows version of thunderbird. Several users here have a couple gigs of email and use thunderbird on windows computers, none have complained, yet.
