ASKER
Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.
TRUSTED BY
1st - Someone has delete this AD account and the Share has this user added directly to the share without using a group. When you delete a user from AD you will get SID objects appearing under shares that this user once had access to.
2nd - If this particular server does not have the "net logon" server running, it will create SID's on the file shares as the net logon service is used to communicate with AD.