Comment 25 for bug 381164

I'm running Xubuntu in a VM. I'd installed Xubuntu Lucid from an ISO a few days ago; today I upgraded to Maverick, and I got this error on one of 5 IMAP accounts which I managed in Evolution. Evolution was running perfectly (better than it ever has, in fact) prior to the upgrade. After the upgrade, however, it is slow, crashes randomly, and gives me various alerts about folder refreshes, listings, and saves -- all of which end up being the same error message: database disk image is malformed.

To work around this problem, I did the following:
 * put evolution into off-line mode
 * quit evolution
 * removed the folders.db file in the offending IMAP directory in ~/.evolution/mail/imap
 * started evolution
 * put evolution back into on-line mode
 * clicked on the folders of the offending IMAP account that hadn't been displaying the messages

At that point, I was able to see all the messages in my various folders and no longer got the alerts and error messages about malformed disk images.

I agree with other users that have made similar comments: if the root cause for this cannot be discovered, it would be very good for Evolution to provide a nice quick UI-accessible means of purging and rebuilding corrupt database files.