Here is the KB on the problem:
http://support.microsoft.com/kb/947215/en-us
And here is a great post on resolution:
http://www.vistax64.com/tutorials/130095-user-profile-service-failed-logon-user-profile-cannot-loaded.html
I hate the way Vista handles profiles. It is a pain.

“I hate Vista. It is a pain.”
I agree.
Grin…
Comment by Richard — December 13, 2008 @ 12:27 am