David,

Are you running the latest update to VFP 5.0? ?VERSION() in the command window should give you a version number ending in 0415 if you have the latest build. If you don't, go to www.microsoft.com/vstudio/sp to order or download Visual Studio Service Pack 3. After you install the service pack you'll need to send new setup disks to your clients so they can update their run-time libraries.

I can't guarantee that this will fix your problem, but it did fix GPF problems some of my clients were having.

>I have a customer who is running an application that runs fine at many other sites. This site has one exception. When the application is being used on a computer, the system works perfectly fine. If they leave there system for ~15 minutes, the system crashes when the click on any buttons, menus, screens in the application. This is happening on 3 of their systems. They have
>
>WIN95
>NOVEL 4.1
>USING MICROSOFT CLIENT.
>NO SCREEN SAVER