Up until now, I was positive I did it right. But my CPU temps are a little high: 46/56c idle/load on a P4 2.4 @ 3.1ghz. I read up on the AS3 sight and followed using the plastic bag on the heat sink and then using a credit card on the slug. That came out a bit rough (edges of the card and little inconsistencies on the card itself) so I smoothed it out with the bag. I did this a few times and before I popped it in the mobo, I could visibly see the writing on the slug (espec number, processor type etc). I was wondering if AS3 application was supposed to be thick enough to cover the slug or it is supposed to be that thin.