>Hi Friends
>
>We have a vfp8 app.recently on client sites they are experiencing some weird problem
>
>sometimes screens go black in app .it does not happen all the time but intermittently.
>
>If they restart the app then everything will be fine.
>
>recently its happening quite frequently and annoying our clients
>any ideas please.
>many thanks
>
>cheers

I think you have to investigate this in order to get more detailed info on when it happens, what actions of the user precede the black screen, what similarities there are between the PCs that experience the problem... Things like that.
Good luck