I have a single user getting the "connection to storage server failed" error message once they log on to Roundcube. This installation has lots of other users who don't have any problems at all.
The single user having the problem can navigate through roundcube, and even go to other folders. For instance, when I click on the Sent folder, I can see emails just fine. Whenever I try to go back to the Inbox, though, I get the connection to storage server failed message. I can see the count of new messages in the Inbox on the folder list, but cannot get to them.
I can see no errors in the access_log or error_log for apache. My qmail logs for IMAP show no obvious errors either.
This is a pretty light user, so I don't believe they were poking around in settings, but everything looks normal in there anyway.
Thanks for any insights on what I can try to do to fix this for this one user!