Originally Posted by
dwarthog
Just a guess, but you may have some adware/malware causing your issue.
On FF go to the Tools menu then select Addons then look under extensions. If there are extensions which you did not explicitly add, it may be a indicator you have some adware running amok on your pc. I had to clean one off my wife's pc called re-markit, there are others out there besides this POS, and it was a pain in the a$$. That POS even created it's own scheduled task to run at a specific time to update itself among other things.
Check your installed programs via the control panel. If something doesn't look right, google it and see what you can find out about and uninstall if necessary.
BTW, that adware/malware crap attaches itself to whatever browser's you have installed. I had to clean up IE, Chrome and FF a couple of times before I tracked it back to the tasks it had created to keep itself running.