I had dual booted with ubuntu 6 months ago to get used to it, and 2 weeks ago I installed ubuntu only on my HDD as my only operating system... I've noticed that since I've done this the screen saver "toasters " runs very jittery... This also happens when streaming TV... DVD's play OK as do Xvids and youtubes, any ideas.. I tried installing Driver robot and get an errors occured notice when i try to use it... Any ideas please... All the hardware is as it was when dual booted and working OK... I have the latest ubuntu 9.04....