I notice the problem was related to multiple factor including the metacity compositing, the bad video driver, some flaw in xorg, etc. I manage to fix most of the performance issue by a regression to metacity 2.24 (from hardy) and using the Karmic kernel.
Sine I upgrade to Karmic now, this problem doesn't bother me any more. -- [jaunty] cpu scheduling is not optimized for multitask https://bugs.launchpad.net/bugs/363663 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
