Hey guys. Having some trouble with my MBA and have no idea what's going on! Basically in the last few days I have been browsing the net as normal and every site I come across (including this one), there are numerous words within text that are hyperlinked to some stupid 'You have won an iPad' or other competition thing. Also, I just logged into facebook and there are advert banners everywhere. I went to comment on a picture and an advert for Neurofen pain killers popped up over my text box? Underneath it just said 'ads not by facebook'. I don't get it. Is this some sort of virus or something? I tried a google search and it's not bringing anything up at all. At a bit of a loss. I use Chrome so opened Safari to see if it was a browser issue, but there are random hyperlinked words on virtually every site I browse using that too. Any help on what to do to get rid of this would be great. I have no clue! Cheers.