Hmmm, didn't get a chance to do anything. Like GreenGiant, went home and had
no problems on home computer, only had the problem on the work computer.
Came in today, and the 'Ads By Google' problem is gone. Looks like some kind of
intermittent issue with commercial company software that occasionally doesn't block
things like that Google Ad problem.
Thanks for all the advice, good to know if I encounter this at home.