Thank you for your bug report, it would be useful to know what software those clients are. Would it be possible to get a gnome-session --debug log from a session having the issue?
** Changed in: gnome-session (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1236569 Title: Close session takes more than three minutes to complete To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1236569/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs