This has been an ongoing disturbance, of which I cannot find an answer to. While on no particular web page, the scroll bar will start jumping up and down the page, erratically, randomly, and I have no control of it. If you hold pointer over scroll bar, there is still no control. This situation then defers to all other apps after Mozilla Firefox is closed out. Has this ever happened to anybody else, and if so, is there a cure?

Thanks a million!
Greg

You probably have malware on your system.
I think it is best you let a malware expert help you remove the infection.

Here are some places I go to when I have an malware infection:

SpywareInfo
ComputerHope
Bleeping Computer Forums