See if this KB article on Norton AntiVirus and VFP applies to your problem:

http://support.microsoft.com/support/kb/articles/Q304/4/82.ASP

>I have clients running an executable version of a VFP 6.0 app I designed and developed. All was working well until some of them started upgrading their computer equipment. Although the executable version is the same, starting up the application takes much, much longer on their newer, faster equipment than it did before. They are still in Windows 98 and were before they upgraded the new equipment. Those that have slower equipment get into the application in 7-15 seconds. Those that have newer, faster equipment take as much as 2 1/2 minutes to get in. Once they get in, the app actually runs faster on the new equipment. Any ideas on what's going on and what I can do to resolve it?
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>Thanks in advance for your help.
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>Tobey L. Miller
>Meridian Information Systems