Hi all, Just a quick word of warning. I'm a TechNet subscriber and just downloaded Windows 7 Ultimate SP1 x64 RTM (released today). I went to Boot Camp it on my MacBook Air 11" Ultimate. Everything went fine during installation and the drivers from Apple installed like normal. I then proceeded to run Windows update which had 9 "important" updates to complete. Upon restart I am now greeted with a looping BSOD. I have tried recovery and safe mode, both also BSOD. I have had Windows 7 Ultimate x64 running on my MBA for the past few months with no issues, so I can only assume this is an SP1 issue. I'm currently in the process of re-installing W7-SP1 for another try. I'll let you know how it goes. Cheers, Matt.