As far as I can tell, the reason the "shut down dialog" appears instantly the second time the "Off button" is pressed is because pressing it the first time, and waiting for it to stop hanging, starts gnome-power-manager:
Before pressing the "Off button": [EMAIL PROTECTED]:~$ ps -aux | grep power Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html rune 7034 0.0 0.0 3004 752 pts/1 R+ 07:12 0:00 grep power After the "Off button" has been pressed, waiting for it to finish hanging, and pressing "Cancel" in the "shut down dialog": [EMAIL PROTECTED]:~$ ps -aux | grep power Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html rune 7074 12.0 0.7 23460 7804 ? Ss 07:13 0:00 /usr/bin/gnome-power-manager rune 7077 0.0 0.0 3004 764 pts/1 R+ 07:13 0:00 grep power -- Quit button freezes screen but does not present Log out etc. options dialog https://bugs.launchpad.net/bugs/150846 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs