user profile - account unknown

[ed]

hello,

i have a winxp pro with sp1 configured as a member of a
domain using active directory. i just noticed that if i
right click on my computer icon then go to user profile,
i found out that there are some "account unknown" entries
and that the only thing showing up is the current user
that's login to the pc/domain and also i can see the
profile for the local admin for the pc. i know that
the "unknown accounts" because if i login as one of those
accounts (i just know what it is thru testing) then it
shows up but the previous profile becomes unknown. i'm
just wondering if this is something new in xp coz it's
not doing it in my w2k pro and what it is called because
i couldn't find any documentation for it... thanks in
advance...

edwin