I found it. It was a widget called Dealply that had been installed on my computer. I have just uninstalled it, so I hope things are OK. Diana > We had this happen on numerous computers in the Garden last week, but only > with Firefox (not Chrome or IE). Very difficult to remove. I believe much > of the problem resides with the Addon 'Shockwave Flash' (Flash is > notoriously bad in this way). I first had to use CCleaner (freeware > http://download.cnet.com/CCleaner/…) and then > disable to Addon. You may also have to clean up with programs like Spybot > and Mawarebyte (both freeware). > > Paul >