I bought a new Windows PC with an AMD processor, and it has Windows service pack 2....I haven't used Windows since like last September when I switched to Mac...and I got this to hold me off till a new PB is released. What is wrong? It has been running fine for weeks, no crashing,responding....and smooth...why? Is service Pack 2 really that good? I had never used SP2 before...and my PC runs like a charm...it is weird.