Hi, I have XP computers that I am only running SandboxIE on now. But, I can't even run that with this new OS as far as I can tell. I only want pretty stable options. Returnil does not seem to be able to run on this OS, either. I really don't want AV, AT, AS software anymore, they never found anything of note and they really slowed down my computer. What are you running on your Vista or XP 64 bit boxes to keep them secure?Somehow, I don't think that this is the Fort Navarone that Microsoft would have everyone believe. I would like to run something like Sandboxie or Returnil as long as I can save data between reboots. I do an on-demand regimen every weekend: online scan at Kaspersky.com, bitdefender.com, AVG.com. Even though I am running naked, I still have not had any problems yet. But, again, would like some kind of backup or something. Thanks, B.