All other kmail crashes I found reported seem to be related to IMAP which I am *NOT* using. My mail is stored in maildir folders. I am running version 4:3.5.6-0ubuntu4 of kmail on feisty. ** Attachment added: "KMail backtrace" http://librarian.launchpad.net/6425864/kmail.bt -- kmail crashes on startup https://launchpad.net/bugs/85057