There are now many ads-on or extension offered for your Firefox web browser. After you installed one or two, suddenly your Firefox won't run normally, it keeps transferring data and never ends. Don't be scared, you'll be alright, I had this problem before and here is the solution. In my case, my Firefox misbehave after I installed ReminderFox. It's a handy event reminder but eventually I have to uninstalled it.
So here is the solution of the problem (I assume you use Ubuntu, similar procedure probably can be done too for other OS or Linux distro):
1. Run Firefox in safe mode, type in your terminal
firefox -safe-mode
2. You'll be prompted with several option to what state you will put your Firefox to, in my case, I disable the extension.
3. Then press OK.
That's it.
So here is the solution of the problem (I assume you use Ubuntu, similar procedure probably can be done too for other OS or Linux distro):
1. Run Firefox in safe mode, type in your terminal
firefox -safe-mode
2. You'll be prompted with several option to what state you will put your Firefox to, in my case, I disable the extension.
3. Then press OK.
That's it.