I have a macbook pro and recently installed the new OS (10.6). I run windows XP and now my system continually freezes when I am in the virtual machine. It temporarily freezes when I am on the internet, especially with the touchpad. If I use a mouse it works better. When in a WORD document it freezes and I have to save the document to unfreeze. Is there a fix for this, and if not how to I go back to the old OS?