Yes, loaded a few apps and things after install, but it didn't slow down right then, it was after a day or so (with no additional apps installed) that it just started slowing down.
Correct, We have no other Win7 clients on the network. DNS is configured correctly, etc etc. No errors or issues with the servers or the network.
Even logging on and off locally to the box when it is off the network takes just as long. Loggs don't show anything either.