Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches.

You might need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).

Then perform these steps:

• Click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
• In the Firefox options window click the Advanced tab, then select "General".
• In the settings list, you should find the Use hardware acceleration when available checkbox. Uncheck this checkbox.
• Now, restart Firefox and see if the problems persist.

Additionally, please check for updates for your graphics driver by following the steps mentioned in the following Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

Did this fix your problems? Please report back soon.

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• TDSSKiller - AntiRootkit Utility
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back soon.

I just tried disabling the accelerator and it didn't help.

It's highly unlikely to be a malware issue as I'm on a Mac.

Sorry, I though your details said that you were on Windows 7. My mistake.

Does the scrolling abilities slowly decrease or does it just all of the sudden stop scrolling?

See also;

• [/forums/contributors/709697?last=54950#post-54832] scrolling issues on Mac OS X 10.9

ComputerWhiz, No worries. :)

cor-el, Thanks, I knew I couldn't be the only one! I'm not sure why I couldn't find that on my own.

Glad to hear that cor-el has solved your problem.
Thank you for using the Mozilla support forums.

P.S. I set my Scroll Bars to always show in System Preferences—>General. I then had to restart my computer for it to help. Or at least it's fixed it's working thus far.