Late to the party, but I noticed something similar testing win2k in a NT4 environment under a Samba PDC.

Simply, the PDC had a variable of \\server\%U (user's home drive) and a drive letter of U: , well, NT4 had no problem with the login script reading:
net use U: U:
2k would not touch it.

So, all I did was add the lines:
if not exist U:
net use u: \\server\%username%

(useless on a kixtart forum, but it took me 2'ish hours to figure it out. /shrug unix has spoiled me in some respects.
[Big Grin]