Hello!

 

It may be possible that you installed too many add-ons. Mozilla Firefox is a big memory hog and the more the add-ons, the bigger and bulkier it's going to become. Must be taxing your computer's resources too much. There are two ways to overcome the problem.

 

# 1 - Close Mozilla Firefox. Go to Start > All Programs > Mozilla Firefox > Mozilla Firefox (Safe Mode).

 

Disable all your add-ons and then see if it helps. If it doesn't, then there's the second method.

 

# 2 - Simply re-install Mozilla Firefox.

 

If none of these works, you could post your query on a website called mozillaline.com. The people there will surely be able to fix the problem for you!

 

Hope this helped!