Ever since the release of Firefox 1.0 advertisers have searched for new ways of implementing their pop ups and ended up using pop-up abilities of Java and Flash which the Mozilla developers didn’t block since they feared it would block any legitimate use for them.

If you’ve been getting them (I know I have) then install this plugin made by the developers themselves.

Note: you need to allow the site to install plugins. Click on the “Edit Options” button that will appear then click on “Allow” on the window that will popup.

Via Tom’s Hardware