Originally Posted by BOBOT
Finally tracked down this bugger. It was caused by a Firefox add-on extension from something called We-Care.com. It seems to be a benign entity, but I have no idea how it got added. Anyway, removed it & problem solved.
If you experience this or something similar go to Tools/Add-ons/Extensions & look for the troublemaker.
This for Firefox; I imagine IE or Chrome have something like it.
That is the problem. How dare those people put that add-on onto your computer without permission?