Credential Roaming hotfix...
Just a slight detour from our debugging stuff for some new info on credential roaming\DIMS ...
https://support.microsoft.com/?id=934797
The size of the Ntds.dit file on the domain controller grows continually larger after you enable the "Credential Roaming" feature for Windows Vista-based client computers in the domain
Well now, that can't be good can it. If you use cred roaming for Vista clients - better get this on there.
spatdsg