error occuring while reconnecting ?

One of my Win2000 is giving me an error M.S. Windows Netwrok local device name is already in use. One suspect is my login script
login batch file:
@echo off
@Echo Mapping your KSN INC standard network drives

@net use s: /delete /yes >nul
@netuse s: \\ksn-inc\share /yes
@echo Mapping S (Share drive)…

net time \\ksn-inc /set /yes