I followed the instructions on the page linked, and have obtained two backtraces, although I am not sure of their usefulness, as the program didn't crash in any of the two periods I had attached the gdb. But anyway, here they are, also included are two screenshots, both showing what I mean, also note the system monitor in the taskbar: nearly all that processor usage is g-s-m.
** Attachment added: "g-s-m terminated by a "kill process" command from me" http://librarian.launchpad.net/6882655/gdb-debug.txt -- Excessive CPU usage by Gnome System Monitor https://launchpad.net/bugs/93847 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
