I also have this bug with an up to date gutsy. When I choose System » Quit, the full X session hangs for about one minute. Then I get the dialog without hibernation and standby options. This happens ~9 times of 10.
I find every time this in .xsession-errors: ** (x-session-manager:5613): WARNING **: Couldn't connect to PowerManager Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. -- Mysterious segfault of many GNOME programs makes gnome-session unresponsive https://bugs.launchpad.net/bugs/74682 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs