I have a Sony Vaio laptop running Windows XP SP2 with Novell Client
Version 4.91. The machine hangs on login script when connecting to
Netware 5.1 server. All other machines on the network login fine with
same login script.

When the Sony Vaio is booted up as Workstation only and the red N is used
to access the netware log in box the machine logs in straight away.

Grateful for any assistance.