Hi All, This is my first post so please be easy on me. I'm a new Mac owner (though I have been using them for years at work). I recently bought a refurbished 20" iMac C2D from the apple store after my best friend talked me into it (I was dead set on buying new from the apple store, but he insisted that he has never had trouble with his refurbished macs). Anyways, to make a long story short, after I received my new iMac I noticed that there are bright areas on the corners of the LCD screens if watching a DVD through front row or any type of dark image. Is this a known issue? Additionally, everytime I put in a CD or DVD into the superdrive it makes this awful sound (not the normal sound it should make seeing as I compared it to the 20" iMac CD I have at work). It sounds like it is rubbing against something, it's hard to describe in words, but yeah. My question is, do I just take this into my local genius bar and hopefully they will fix it? Or will they just fully replace it? I'm not sure because it's a refurbished machine. It's only been 2 days since I've received it. Thanks in advance for your help.