Windows 98 Logon to Domain Hangs

My Windows 98 machines seem to hang when processing the Windows 2000 Server
Logon Scripts and the user must Click Cancel. It seems to execute
everything ok...

The primary script calls a secondary script which changes regularly for
automated proprietary software updates. So, I do not want to put the info
for the update into their "net use" logon script... I'd have to update too
many scripts on a regular basis.

Any ideas why the machines might hang.