I blogged May 17 that less than 24 hours after Apple unveiled its new MacBook laptop, some users started reporting that the black matte finish on the notebooks was peeling off. Now it turns out that users of the white version say the white finish is turning yellow on the top. One person posted pictures on Flickr.

Leading theories are: 1) dirty hands; 2) a chemical reaction between skin and plastic; and 3) heat issues.

Regardless: Prospective MacBook buyers beware -- you might want to monitor the situation and find out what's causing it and how to prevent it before turning your hard-earned money over to Apple.