mouse wheel page scrolling ability disappears for no apparent reason
I've had a consistent problem with sustained mouse wheel scrolling using Firefox. After starting my computer (Win 7 Pro) mouse wheel scrolling functions as expected until suddenly, it stops -- only when scrolling a page on Firefox. Wheel scrolling will still work when I switch to a Microsoft app, but not if I switch back to Firefox. The only thing that appears to fix this is to re-boot the OS. Perplexing!
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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
- do NOT click the "Refresh Firefox" button on the Safe Mode start window