While I'm somewhat sure the crash occurred while I was pressing the refresh button, a guaranteed way of causing a crash is to double click on a subfolder in the subscription view. This will generate a crash 100% of the time.
-- Crash while refreshing IMAP subscriptions https://launchpad.net/bugs/67352 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs