I think it is linked to cairo rendering as I have the same problem on the same computer when loading some pages in firefox (I had no problem before upgrade). I have an ATI card too, but the problem can be reproduced with both fglrx and radeonhd.
On my other computer (nvidia gpu) I have no such problem. Possible duplicates : #18055 https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/180055 ** Changed in: gnome-system-monitor (Ubuntu) Status: Incomplete => Confirmed ** Summary changed: - System monitor causes Xorg to consume 100% CPU + [hardy][regression] System monitor causes Xorg to consume 100% CPU -- [hardy][regression] System monitor causes Xorg to consume 100% CPU https://bugs.launchpad.net/bugs/187383 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
