Domain Users & Domain Administrators groups

I’m going to venture a guess and say that this Linux version doesn’t support the changes made with the way Visata and 7 access network drives and shares. I have a network of 20 XP workstations and they can access the drives using active directory authintication without issues.  However, when I was setting it up on my Windows 7 machine I couldn’t access anything after I set permissions using AD user accounts.