slow loads and LOTS of crashes... help

i have really slow opening of files across my works gigabitnetwork but only with solidworks (sp07 prerelease for08). Imrunning vista allowed solidworks through the fire wall. gotrid ofnorton installed AVG. told it not to inspect files from myjob dataserver. and when i open a file it crashes or takes upto 10minutesto open and do a save so its not really working. tried awholelotta things any other sugestions

when saving opening windows task manager says im onlyutilizing0.03% of the LANS availibility.

I am running a dcd 2.4ghz processor 4gb of ram gigabit LANcard120gb 7200rpm hard drive and have vista ultimate 'running'theshow.SolidworksSolidworks Explorer