I recently bought a new MacBook Pro 15 inch about a month and a half ago. I got it at the beginning of this semester. I absolutely love it but I have a problem. If I am on it for a few hours like 2 or 3 the screen develops dark bars that are vertical. I bought many programs for it also. Is this a problem with many macs? I ask this because my first mac was a iBook and I had the screen blackout on me after like two years of owning it. I have also owned three ipods and after about two weeks to a month and a half of purchasing that product a new version comes out. For example I first bought a ipod mini and two weeks later the nano came out. I then bought a 30 gb video and one month later the new version with enhanced lighting and longer battery life came out. My last one was a ipod touch and three weeks later the new version that has more gb came out. The reason I mention this is that because I noticed you have a new line of notebooks coming out and with my luck I get to see that once again I am spending just as much money but always getting yesterdays technology. Is there anyway of exchanging my not so old notebook for a new one?