Try to remove the Firefox plist file (org.mozilla.firefox.plist).

• http://www.macfixit.com/article.php?story=20060606082246983 How .plist files become corrupt and troubleshooting the results

Go to "Library > Preferences" and remove the plist file for Firefox (org.mozilla.firefox.plist).

Try to repair the disk permissions:

• http://thexlab.com/faqs/repairprocess.html
• http://guides.macrumors.com/Repairing_Permissions

I'm using Windows 7...the menu bar tabs are frozen. Back and forward buttons are there, but also frozen. The home page is also blank even though it is set at google.com. On top of that, everything opens in a new window, when I have it set to open in a new tab. This update is driving me crazy!!! I have a button I use on my Logitech mouse for going BACK in history and it worked perfect until this update. I can't go back at all now! Not even with the menu bar that is frozen.

@amusing

Please start a new thread for your problem or question and provide troubleshooting information like your operating system and installed extensions and installed plugins, especially since you are on a different platform.

• [start a new thread]
• [/kb/Using+the+Troubleshooting+Informatio...]

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode