Hey guys, hope everyone's having a good weekend so far. I just got my copy of Windows 7 Ultimate x64 yesterday and installed it on my Macbook Pro unibody with no problems. Windows 7 runs great. The problem occurs when I boot back up into Snow Leopard. My computer will randomly start beachballing, especially more often in Firefox (version 3.5.3). Has anyone else come across this? Does anyone know a solution. Thank you ahead of time!