When I log in, everything works fine, then the external screen goes off, CPU core #3 goes to 100%, and the mouse moves very slow for 5 seconds or so. Then everything goes back to normal for a while and it does it again. Do I need to install a new graphics card driver? Which one do you get for the NVIDIA GeForce GT 330M 512 MB?
http://img29.imageshack.us/img29/1676/linuxmint.jpg

Do you have any advice for something to try?
Thanks (I finally upgraded from Linux Mint 9!)

