I'm sure you know about the issues with some NVIDIA mobile GPUs, as earlier in July NVIDIA admitted it was taking a $150 - $200 million charge to cover (emphasis mine):

... anticipated customer warranty, repair, return, replacement and other consequential costs and expenses arising from a weak die/packaging material set in certain versions of our previous generation MCP and GPU products used in notebook systems. All newly manufactured products and all products currently shipping in volume have a different and more robust material set.

Earlier this month NVIDIA gave laptop owners with NVIDIA GPUs headaches. The company filed a report with the SEC (.PDF) stating that the company was taking a $150 - $200 million charge to cover (emphasis mine):

"... anticipated customer warranty, repair, return, replacement and other consequential costs and expenses arising from a weak die/packaging material set in certain versions of our previous generation MCP and GPU products used in notebook systems."