roaming profiles

i have one user that i have set up with a roaming profile
from xp to a 2000 server no problem. This user can go to
any machine works fine.

An other user i set up in the exact same way. Tho seems
to use his local profile when he logs in to his machine
as there are no new folders or information stored on the
server about his romaing profile when he logs on and off

When this user logs into any other machine on the network
the roaming profile kicks in as folders for desktop etc
appaer in the server share.

When i goto System--user accounts to try and change
the user locally (on the machine the romaing profile
dosnt work on) the Roaming profile switch is greyed out


What is hapnin plzzzzzz


Thanks in advance

..