I got a new imac about three weeks ago, and I can't understand why safari randomly will display the wrong pages for the site i want to go. I'm on one site then after clicking on a line it will load up another page i may have visited before or at the same time in another tab. Example i'm trying to access a clothing store and its showing me an ebay error, i get random errors trying to go to youtube, i try going to wikipedia and it loads cragslist. Is it malware?