hi...i have recently bought a new macbook...the basic model 2.0 GHz and 1.0 GB RAM...using the parallels feature i installed windows XP on it as well and now i use it as a secondary OS... however when i switch from my MAC OS to XP there is a jarred screen first and then i move onto XP with a 640X480 resolution which after a couple of blinks moves to the normal mode... anyone knows how i can fix this or why it's happening?