The patch in the summary shows a warning every time a mail is removed on the server. It would be nice if this was changed, since I know have to press yes several times each morning since a cron job on the server has removed mails from several mailing list folders.
I've modified the patch like the KDE bug report recommends. Hopefully that clears up the issue (after a re-emerge of kmail).
That fixed it for me, thanks.
marking as fixed.