I'm not sure what's going on, but since I upgraded Parallels to 4.0 my system's performance hit an all time low. I've never had to restart both my Windows XP client OS _and_ my Leopard so many times in one week. I haven't been doing anything different with my system (granted I am using it for development and some pretty heavy stuff, but I was doing the same with this laptop and Parallels 3.0 and had none of these problems). OS X keeps telling me my startup disk is full despite having over 30GB of space available, Windows apps performance is really bad and some of them simply hang a few times a day (I'm talking about simple MS Office apps and IE), my OS X performance gets unusable after a while until I shutdown Parallels. What's going on? Am I the only one getting this kind of experience? Alon.