I am unable to replicate this on dapper, so I am marking it fix released. It must have been fixed with an upgrade.
** Changed in: xscreensaver (Ubuntu) Status: Needs Info => Fix Released -- ALT keyboard shortcut for screensaver can lock user out of typing password https://launchpad.net/bugs/31115 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs