I've never seen this before but I'm deploying a captured Windows 7 image that has worked fine in the past and on some PCs it's keeping the old OS? I have PCs with the Windows.old in them and the PCs ask if I want the earlier windows when I boot?
The 7 image works fine it just seems odd.
I have a feeling this is a DNS issue? or the PCs account already is in AD?
What causes this? I've never done a unattend as it always worked fine before.