Hi All, Currently running a brand new MacBook Air (the 1.8 G Intel Core i7) with 4gb memory, OS Lion and Windows XP. When I start XP, even with basically nothing else running, it runs my memory usage up to 3.5gb. Sometimes the machine gives me the grey reboot screen because there is no memory left. Would a different version of Windows make this any better? Is there some configuration that I can change that would help? I'd rather not change to Win 7 if I don't need to, as what I have works (although slowly) ok. Thanks for your help in advance.