Netware 6.5sp3, Vista Client (unknown version)

We get a LOGIN-LGNWNT32-430: The following drive mapping operation could
not be completed.
The error code was c0000103

The map command is a map next command (map n)

The same account works fine in XP, and on other computers. The drive can be
manually mapped after the login script has run by hand-selecting a letter.
I've been trying to cross reference the error code c0000103. Can't seen to
find any reference to what it means in the error lists on the Novell site
that we've looked in so far.

Does anyone know where we can look or what it means.