I am having the same problem with gnome-system-monitor 3.2.1-0ubuntu1 on Oneiric with a 3.0.0-12-generic kernel. Here is a trace file.
** Attachment added: "strace-gnome-system-monitor.log" https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/881955/+attachment/2578924/+files/strace-gnome-system-monitor.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/881955 Title: System monitor freezes up when switching to Processes tab To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/881955/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs