

First, delete the folder named firefox inside etc ( /etc/firefox/). Now let’s remove folders in the root directories.These folders generally contain the flash cookies stored by the browser. If you were having trouble with adobe flash player on Firefox, you may also want to delete the folders named. This is a hidden folder so you will have to make sure hidden files and folders are visible in order to see it. Simply execute the following command to launch Nautilus, the default file manager in Ubuntu, as a root app.

It’d be preferable to launch it with root permissions since some of the folders that need to be removed can’t be removed without root access.

In the hope that when you install Firefox again, the problem would be gone. This may make you want to uninstall Firefox. Philosophy aside, Firefox is but a piece of software. And now you know why Firefox fits so nicely into the philosophy of Linux.

If you’re wondering where I’m leading with this, it is the fact that Mozilla Firefox is the default browser for Ubuntu and some other Linux distributions. Mozilla claims to be a non-profit company as well. Mozilla Firefox, very much like Linux, is free and open-source software.
