A client has two computers. The first computer is a Windows 2000 Workstation and has a custom VFP 7.0 app I wrote running on it. The other computer is Windows XP Pro running the same custom app and accessing the app over ethernet from the Windows 2000 workstation -- peer-to-peer. These are both workstations; neither has Windows "Server" software running on it.

The user on the Windows XP machine complains that the application runs at a crawl when the user on the Windows 2000 computer is running the custom VFP app; but when the user on the Windows 2000 workstation is not running the custom VFP app, the app runs very fast on the XP computer. Both computers have 100MBit ethernet cards and are located within 20 feet of each other.

What would cause the app to slow down? Is it because they need Windows Server software? Is it because they have XP on one computer and Win 2000 on the other? Is it a service pack issue? Any suggestions would be appreciated.

Joel