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I tried a lot of commands to remove firefox, but when I install again, profiles continue on computer, but the problem aren't the profiles, the problem is some rendering problems, I can't see the link I'm surfing and I can't see tabs either.
I tried: sudo apt-get purge firefox-trunk and sudo apt-get --purge autoremove firefox but it doesn't work.
You probably added the official PPA for Firefox Beta to your repositories. In order to switch back to Firefox stable, you need to remove this PPA again.
Start Software Updater and click at Settings, now switch to the tab Other Software and search for the following lines:
http://ppa.launchpad.net/mozillateam/firefox-next/ubuntu trusty main
http://ppa.launchpad.net/mozillateam/firefox-next/ubuntu trusty main (Source Code)
Uncheck or remove these lines and close the Software Updater.
To get the current stable version of Firefox, uninstall and install Firefox again. If you are using the terminal to install Firefox, please run sudo apt-get update first.
If there are still problems, you probably gonna need to delete the previous Firefox profile.
Close Firefox and open Files, go to your Home folder and press Ctrl+H to display hidden files. Now delete the folder .mozilla, which contains your Firefox profile.
You are going to delete your whole Firefox settings, extensions, bookmarks and browsing history!
