I looked at the "fix"....
I don't know about Vista 64-bit systems, but my Vista Home Premium 32-bit does not have "NT Authority\Service" in the localgroup "Administrators". Yet my "System Information" page displays everything properly.
Are you sure it is a good idea for "NT Authority\Service" to be in the localgroup "Administrators"?
Maybe the permissions are all that need to be changed??
S-