I can confirm this, after restarting X with Ctrl+Alt+Backspace, the log in process stops just after the sound is played.
** Changed in: gnome-session (Ubuntu) Status: Unconfirmed => Confirmed -- Desktop halts loading when startup sound is played https://launchpad.net/bugs/86162 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs