Have you tried commenting out the portions that call other scripts? My first guess would be that this portion is really what is taking the longest. Try commenting everything below this section...

Code:
;*************************************************************
;Process M & N Drive Mappings
;*************************************************************
If InGroup("TKNTOR\CLN__Clinton Users")
$NTData = $RootServer+"NTData"
$NTSoftware = $RootServer+"NTSoftware"
Use M: $NTData
Use N: $NTSoftware
? "Drives should be connected" 
endif


Also you dont need the double parenthesis in the ingroup lines. Im not sure if that would cause any slow downs but just incase.