>>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.
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>I think, this curstomer of your has virus?

Something attacking his eye muscles? :)