Slow mapped drives

This was a tip in TR's XP tips e-newsletter a while back:

How to Speed up the Display of Icons in My Computer
When you open My Computer, by default XP will search for network files and printers. This slows down the display of the icons while the search takes place, especially on a slow machine. You can speed this up by telling XP not to perform this search. Here's how:
1. Click Start | My Computer.
2. Click Tools | Folder Options and click the View tab.
3. Uncheck the checkbox that says "Automatically search for network folders and printers."
4. Click OK.
Now when you open My Computer, the icons should display faster.

HTH

There's a possibility that you may not have the same protocols installed. Check both systems and make sure that whichever protocol is being used for sharing is being used on the secondary system. Also, I've had much better luck with NetBui instead of TCP/IP when it comes to mappings/sharing. Even though both work, NetBui seems better. Just a thought.

You may want to check your provider order under network settings.

Network Connections>Advanced>Advanced Settings>Provider order

Make sure the Microsoft Windows Network is at the top of the Network Providers list.

Hope that helps.