Just thought this was interesting.
Apple has acknowledged video problems with the latest shipment of MacBooks and MacBook Pros.
Early customers of the Penryn refresh of the Apple notebooks had complained of flickering images during a QuickTime video playback on MacBooks and MacBook Pros shipping with the latest version of Mac OS X Leopard, according to our colleagues over at MacFixIt. Several discussion threads have sprung up over on Apple's user forums, and some customers report that Apple has now acknowledged the problem and is working on a fix.
MacFixIt reports that fix should come with Mac OS X 10.5.3, currently in the works. AppleInsider has reported that Apple has been a little more active than usual with the release of new builds of 10.5.3 to developers, suggesting that the next version might arrive sooner rather than later. Mac OS X 10.5.2 shipped in February.