I'm currently running Vista running on my Black MacBook (not C2D) with 2GB of RAM. Everything runs smoothly and well except for the graphics driver of course. However, whenever I try to restart it it or try running it after using it once it does not start up properly. I then have to install Vista again and run into the same problem somewhere along the way. I guess this is probably because Parallels is still working on compatibility issues but was wondering if anybody else was experiencing this.