When I recently downloaded SkypeI also received several uninvited add-ons which totally revised the appearance and operation of my Mozilla, and added a task bar called Key Bar 1.12, and some kind of PC Optimizer program. I found several programs were added that day and uninstalled them all. Nothing changed, so I uninstalled Mozilla. That did not help either, until I found a link in Mozilla help to remove add-ons and restart. These programs were apparently rigged to stop me from doing this, as there was no response when I clicked the option to remove these add-ons. So I manually restarted. Problem solved, everything seemed to return to normal. But now I occassionally receive a yellow bar saying my Mozilla is unsupported, and to update "click here". I keep dismissing it as I am afraid it is that nasty little thing trying to get back in control. Is it them or is it Mozilla. How can I know if I have the latest or the true Mozilla?