Google Advert Bug/Spyware?

Hi, i just noticed this google ‘toolbar’ jpg advert on google whenever i visit it at home, but on every other computer, it is not there. Could this possibly be a bug or spyware? I remember seeing someone else post about this, and it was something different, google looked kind of different, i cleared cookies, but the advert is still there, and not on any other computers. If this is spyware, how can i get rid of it?? :slight_smile: Thanks (tell me if you’ve ever had the same problem, a long yellow advertisement of the google toolbar and also google having bold text and looking out of shape ):hair: