Hi. I bought a penryn 17" (2.5ghz/250gb) MacBook Pro in April, and one month later the rectangular trackpad appeared to have slight aluminum-like redness on the left and ride sides of the trackpad.. but the top, bottom, and center are all silver. Has anyone experienced this before? Is this common? How do I fix it? I have never even taken my MacBook Pro outside, nor have used greasy hands on it. I have taken good care of it.. I didn't care about the problem at first because it didn't really bother me, but now that I am planning to sell it I think it may hurt the sale a bit. Thanks for your help.