Confirmed by Martin Pool here https://launchpad.net/products/sylpheed-claws/+bug/32215/
** Changed in: sylpheed-claws-gtk2 (Ubuntu)
Severity: Normal => Major
Assignee: (unassigned) => MOTU
Status: Unconfirmed => Confirmed
--
IMAP support broken, crashing app
https://launchpad.net/malone/bugs/39558