Hi,
Could be a problem with the Video card (Needs to warmup before it settles down), or a High Magnetic field affecting the Monitor, or the Fly back transformer is on the way out.

Any way not your problem, unless you supplied the equipment.

>A customer described to me that sometimes when he starts my VFP 9 application, almost right away the application main windows starts "jumping and shaking" (these are his words). He says that the only way he can stop this is by going to the Task Manager. How can I determine what would cause this problem?
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>Any suggestions would be greatly appreciated.