I can confirm the bug on my system it is related to a compiz crash. A crash report is attached but I had to mangle it a bit to remove the >300MB of coredump.
** Attachment added: "report.txt" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1297771/+attachment/4044856/+files/report.txt -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1297771 Title: Switching accounts requires password twice if account already active. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1297771/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

