Anyone here had experienced while using Firefox as a browser and you're in a forum typing something when all of a sudden enterfactory opens a new tab, not just one but two tabs? I'm not sure if the system was infected with a rootkit or spyware of some sort. It happened thrice already today. I'm not sure what causes it even after looking for the addons and plugins installed in Firefox. Funny though, it doesn't happen on this forum. Also, the cursor blinks when it's pointing on the browser. Btw, I'm using the latest beta of Firefox 7.