fatality
I've got a problem with WiFi connection - my PC finds the network and connects to the router, but there is no Internet access (and there's that "fork with X" icon in the system tray). Additionally my PC sees no network adapters when I go to the Control Panel.
mkmozgawa
Okay, so you have to disable automatic updates. 1. In Firefox find Settings in the main menu (upper left corner of the screen). 2. In Settings go to Settings, then Advanced. 3. In Advanced tab find Updates. 4. In Updates tick "Don't check for updates".
When you want to update Firefox you can simply check for updates on Mozilla's website.