Sounds like computer browser issues. Use prowstate to check the computer browser status and post back with the result.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net 
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com 
 Brand new Windows XP Pro SP2 PC with all patches/updates
 One piece of secondary software loaded - Cad application called OrCad
 User opens a file via a mapped drive and gets slow application performance
 User opens same file via UNC path and get fast application performance

 Same scenario but not nearly as noticable in browsing files and such

 I've seen a lot of issues with XPRO2SP2 users that complain of slow UNC
 browsing/performance but haven't seen much with slow mapped drive
 performance.

 Any tips/points to review?

 Shut down all non-essentials services and startups already.

 Thanks