Comp lag~

[COLOR="Red"]I always start laggin when I get on maple,not a net lag, like a computer lag >.>
it starts going slow and freezing
I already defragmented so I don't know what to do anymore -___- [/COLOR]

specs: http://www.southperry.net/forums/showthread.php?t=2516

It only happens whenever I'm using iTunes as well >.>