I have a problem with black squares,rectangles, etc, in the contact list on facebook, but it is only in Firefox, I no longer know what to do? I'm using Windows 8.
Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.
(If you're not using it, switch to the Default theme.)
Don't select anything right now, just use "'Start in Safe Mode" To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again. If it is good in the Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one.
Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.
When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.
i turned off the hardware acceleration and the problem disappeared but what makes it manifests itself when this option is enabled, I do not know
tried to run in safe mode without any addons and it still presists, now i have clean installation with option turned off like i wrote above
after running in safe mode i noticed that the problem dissapeard but in normal mode it persists
Check your addons are upto date.
Make use of default theme.
in safe mode as i can see theme and default feedback addon is turned off and that's all, i don't have any other addons beside java,flash,silverlight,some intel and that's all
i think it's something with the theme but i'm not sure
use firefox default theme and check it
i have only default theme and in safe mode there is no problem, in normal run it occures