I managed to discover that the bug was caused by the pam-usb package which was installed on both my machines (at work and at home). After removing this package everything went back to normal.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/681321 Title: Xorg crash on attaching or detaching any USB device _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp