Login batch file maps drives very slow

We have an NT 4.0 Domain, with Win 2k clients. One laptop has a problem at login. The batch file that everyone runs, maps all of the network drives. This one pc takes an extremely long time when mapping each drive. We have not noticed this on other machines.
It does not matter who is logging on, or where it is connected to the network.
Does anyone know what this is caused by, and how to fix it?