I know this is post really OCD, but I just bought the computer and have been cleaning it with Clorox wipes, followed by a damp cloth then a drying. I just noticed on the underside of the Macbook after cleaning, some whitish blotches -- and the areas look less shiny to me. Does anyone know what this is? I've tried cleaning it off but it won't come off. It is odd to think it is the wipes since i've cleaned other areas repeatedly with them and there is no damage. Thanks.