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http://www.dailytech.com/article.aspx?newsid=2704
http://www.dailytech.com/article.aspx?newsid=2704
Apple cops up to a manufacturing mistake in MacBooks, but stays silent about MacBook Pro issues
Apple today released a statement on its support site that discusses the newly released family of MacBooks. Over the last several weeks, many have complained that after using their new MacBooks for extended periods of time, the devices became extremely hot and consequently locked up during normal use. The issue of poor thermals has become common place with Apple's Intel-based notebooks although the company has maintained that the MacBooks were operating within "normal" parameters.
Some MacBook owners who took a closer look at their units, however, found that the rear vents of the units had been blocked by a thin piece of plastic. The entire vent was covered and hot air from within the units could not escape. While the problem doesn't stretch across all MacBooks, it appears as though a sizeable number of owners have the problem. Apple's statement regarding the issue is the following:
Some MacBook computers may appear to be running too warm, with the fan running consistently and heat emanating from the top and/or the bottom of the computer. If this happens with your MacBook, check the rear vent of the MacBook to make sure it's not blocked.
Some MacBooks may have left the factory with a thin piece of clear plastic covering the rear vent. This is used in the factory to prevent dust from getting into your computer. If your MacBook has the plastic still over the vent, simply remove and discard it.
Another report claims that the matte paint on black MacBooks have begun to flake off from the undercoat. The problem so far has been limited to just one case.