After install of Vista Enterprise (64) in dual boot, I scanned my previous c: drive (now d:). Of course, all user folders were not accessible UNTIL I shared them! NO permissions asked, and I was not even logged on as admin on Vista!Has anyone done some testing on this? Can any Vista client circumvent security in a mixed environment?

what did you share them as to all, to guest, to everyone, Vista will see a NTFS partion, and if you mount if in Vista computer Vista will prmopt you if permission are set on the old ntfs drive, for example in my system I have XP as second drive on Vistal computer, when i go to documents and settings/ user name i get prompted by vista do you want to change permission of the drive.