Terminal Server with W2K SP4

Hi there. I got the following problem on my Terminal
Server Upgrading it to W2K SP4 :

Windows cannot do loopback processing when the computer
is
joined to a downlevel domain or is a member of a
workgroup. Loopback processing will be disabled.


Additionally the logonscripts on TS became local and are
not anymore mandatory, so that the Remote LAN Users have
no more LOGONSCRIPT ... and so, no more User Drives.

Actually i coul'd not find further information.
...

Someone can help ?