Hi there,

Weird stuff! That sounds like something that *could* be caused by some add-on that you may have installed. That's all I can think of at the top of my head. One thing I would encourage you to try is Reset Firefox: https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems. It restores your Firefox settings back to normal while trying to preserve most of the data that you care about (bookmarks, saved passwords etc). Give it a try and see if it helps.

Thanks!

- David

After scouring the net and no solutions for this issue which was pissing me off i decided to download a previous version of FF

Currently i have Version 33

I downloaded Version 30 as there didnt seem any problems with it.

I uninstalled Firefox, removed profiles from program files - used CC Cleaner cleaned up my registry and installed Version 30

All loaded up no problems and no more black blocks

So there is an issue bigtime with V33

This is what i was getting in the image file.

I also turned off automatic updates

Did you try Reset Firefox in version 33? Would be good to know that this is solved for you in more recent versions as well, as we don't want you to stick with 30 for much longer since we're not actively maintaining it with security updates.

Thanks!

Such issues can be a problem with hardware acceleration in Firefox.

You can try to disable hardware acceleration in Firefox.

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
• https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

Same thing here. What @cor-el said (disabling hardware acceleration) worked fine. Thanks, cor-el!

I have the same problem as well as my friend. It comes up with fx 33 beta 7. Disabling hard drive accel does fix it, but apparently it's not an ultimate solution.