My firefox is presenting some malfunction on many features that are not working as they should. I tried to updated to it the last version to solve. It did not work. So I tried to restore it. which should work as I dont think its problems has to do with cookies or saved personal info. It did not work as well. So here some of the problems: 1- My firefox's home page is suppose to show my most visted sites. But it shows only empty/blank space. (image ) 2- I cant add any extension to my toolbar. They simply dont appear when I try to edit it. 3- I cant remove/edit any favorites (changes are not applied). 4- Some extension are just not working. for no reason. Betterttv for example. (Tried to reinstall, reset permission. ). they were working normally before. 5- autofill are not working. Does not show the options. All this does not make any sense to me. As I've tried to solve restoring the firefox. Only cookies, passwords and personal info should have being kept and I dont think they are the cause of all this. I dont wanna to fully clean reinstall it as there are many logins, passwords and other info saved that I dont even remember. In additon it does not make any sense to me at all.