Hi all,
Here I come again with strange behaviour on my PC,
The problem: Sometimes my mouse slow down and goes in the opposit direction than expected, all graphical informations under the mouse are disappearing, and the system is getting dramatically slow.

I have change mouse since the problem first appear, I've check for Trojan horse and worms, I've run Norton 2003 and reinstall Windows 2000 and the problem persist... a nightmare.
I have capture a screen-shot before it was too late to do it:
http://home.tiscali.be/wladimir.stubbe/untitled.gif

I anyone can help me with this,
Many thanks

-reformat your PC and you won't need to worry again; monitor your activities online
-avoid stupid websites w/ lots of pop-ups/banners

Thanks jrIStech

I've already reformat my PC using Windows 2000 installation disk, Isn't this enought ?
And how can I monitor activities online ?