For more than two weeks my firefox opens popping up advertisement windows. Could there be a gap within Ubuntu update system? I think this way because I only apply updates that are sent by update manager and I use firefox for all my safe and serious works. Meanwhile, I could not get rid off it. Do you have any suggestions?
Block the popup advertisements from Firefox by installing this Firefox extension: Adblock Plus.
If the popups come randomly* you are having a big problem. Something is fishy. It could be a plugin you installed (maybe not even on purpose) or something else that is opening teh fox.
If they come while browsing, it could just be your settings are different from what you are used to. For instance, you can set the default pop-up blocker like so:
* on sites where you are sure there are no popups (google for instance), or when you are not doing anything
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