Not sure this is entirely relevant, but I saw this error when attempting to Expunge deleted emails.
The cause of the summary file corruption was that I had less disk space free than the size of the Inbox. It appears that Evolution makes a temporary copy of the whole folder when doing various housekeeping duties, including Expunge. With insufficient disk space, it fails to complete the expected update to the Inbox but nevertheless updates the Inbox summary. I fixed the problem by freeing up disk space, stopping Evolution, deleting all the .index, .data and .summary files, and restarting. I think the generally the problem is that Evolution doesn't deal with failure to update a folder gracefully - and it should definitely check for available disk space. -- evolution bug, "Summary and folder mismatch, even after a sync" https://launchpad.net/bugs/27014 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
