Edit: This is strange, usually good with computers and problems like these but I can't find anything on this thing.
In IE and Firefox, Google and Yahoo! aren't functioning properly. Google won't load up at all (iGoogle works fine for some reason until I search) and won't search. Yahoo! loads up sometimes, it's mail is absolutely fine, but when I search for something it doesn't work. In both cases when I search, the bar which shows loading progress fills and says "Done." but all I see is a blank screen. I have tried various anti-Spyware tools such as Spybot to no avail.
What was also strange was when Google was working (about a week ago) there had been, for a number of weeks, an advert appearing under the search bar on the Google homepage. This advert was basically the word "Casino" but in the style that the word Google appears, and about the same size. When clicked it directs you to some dodgy online casino webpage. Then more recently two Casino ads were appearing. Very unusual.
I've been using MSN/Bing for performing searches and it works perfectly. Google and Yahoo! work perfectly on my iPhone which I sometimes connect through my Hub and all other computers connected to the same Hub have no problems like this.
Sorry for the big explanation, would appreciate any help cheers.