Windows Server 2012 NTFS permissions

Hi,

I have recently installed a Windows Server 2012 storgae box and added it as a dfs namespace server to an existing namespace. The namespace server has created succesfully and all folders and permissions within the namespace have replicated. However, I am seeing a strange issue. We use Flex profiles for our users roaming profiles and they are saved under a folder called Flex_profiles on our DFS namespace. Under the Flex_profiles folder each user has a folder with there own username, ADF for example. In terms of permissions the have the following:
ADF has everything but full control and they are the folder owner. Domain admin has full control. I have added domain admins in to the local administrators group on the 2012 box. I log on to the 2012 box using a domain admin account. If i try to access the ADF folder I am told that i don't have permission???? It's almost like the account I used to log on to the server is not being detected as a domain admin acc and therefore not picking up on the domain admin access defined on the folder. I can confirm 100% that the user i log on with to the server is a domain admin. Has anyone come accross this before?

Thanks