I have pretty much the same problem -- I run three different types of Browsers (Firefox 3.6; Internet Explorer 6; Chrome) and I've found that they are all affected by this ... thing. I suspect that there is some kind of war going on, or a very aggressive move by Yahoo onto the Browsers and Search Engine scene. With Yahoo trying to be an 800 lb (Pound weight) Gorilla - again, Yawn! I this because I've recently installed an AntiVirus application (which is a really good one -- but, unfortunately for the AntiVirus maker they did not look closely enough at who they were getting into bed with -- The 800 Pound Gorilla, Yahoo. This AntiVirus's installer had a default setting to make Yahoo Search my default search engine -- it was a tiny notice about this and I happened to look otherwise Yahoo would have installed openly onto my computer (and I don't want them. I've been using computers since before the Internet was publicly and generally available and I know only too well Yahoo's Huge Ego and Navel gazing behaviour. Basically, Mozilla are on Yahoo's side, because -- in the minds of the anarchists of Mozilla -- Google had no right to make a Browser. This is Mozilla getting its own back on Google and Google Chrome. Mozilla are culpable in this assault on our own property -- our own computers. By two organizations who are bitter at Google. Actually, they are jealous of Google because Google succeeded on the quality and purity of Google products and their terrific business sense and strategy. Now, Mozilla and Yahoo have got in cahoots (and chumps like the supplier of my AntiVirus have been sucked into this) to "Do something about Google" as Mozilla proclaimed they would do (should they get the chance) some few years ago. Now, I have in my computer: Yahoo software and a Mozilla Browser which are both acting truly as Malware. Now that AntiVirus company which loaded Yahoo software onto my computer can understand why I wrote to them pointing all this out (and they, a multi-million or billion pound organization missed what tiny little me could see) that they have helped Malware get onto my system -- now their up-to-that-moment very well thought of AntiVirus and organization ... Well, their name is now mud (but I shall not say their name here. Let them suffer their stupidity and shame, that should be enough for them. They are going to have a time of it cleaning this little ol' mess up.)