Vista - Vista restore point... trust relationship from domain gone

Hi, I have posted this issue in a server domain NG but not getting much
response ( noone must be using Vista yet in domains...lol) so thought I
would ask here.

A client restores his Vista pc to one week earlier, when it rebooted it said
lost its trust relationship with the server. THis was tested with another
spare Vista and same issue, restore Vista to earlier point and loses trust
relationship to domain. Thats first issue.

Other issue was, for those not familiar with DOMAIN setups, I have to remove
the pc from the server domain and then reconnect it. When doing this (using
same user credentials) the original profile for this user was deleted on the
pc. Now I must say that this is in a Small Business Server environment and
adding users is slightly different from normal standar server domains.

We are testing Small Business Environment and normal Server environment but
wondering if anyone else has come across this or could someone test in a lab
environment and post back. I know its a lot to ask... ;-)

If do test in a server environment and the pc is 'live' make sure backup
user profile first.. (just in case) Also enable administrator account with a
password as need to login locally to remove from domain. (administrator
account disabled by default...lol)

TIA