NVIDIA announced a new financial outlook that includes information about issues with previous generation GPU and MCP products in notebooks.

The issues are big enough that NVIDIA plans to take a one-time charge from $150 million to $200 million to cover anticipated warranty, repair, return, replacement and other costs and expenses.
NVIDIA does not reveal details on which GPUs and notebooks are affected, which is a bit bothering if you own a recently bought notebook with NVIDIA graphics.
NVIDIA just says: "Certain notebook configurations with GPUs and MCPs manufactured with a certain die/packaging material set are failing in the field at higher than normal rates. To date, abnormal failure rates with systems other than certain notebook systems have not been seen. NVIDIA has initiated discussions with its supply chain regarding this material set issue and the Company will also seek to access insurance coverage for this matter."

Additionally NVIDIA president and CEO Jen-Hsun Huang stated:
"Although the failure appears related to the combination of the interaction between the chip material set and system design, we have a responsibility to our customers and will take our part in resolving this problem. The GPU has become an increasingly important part of the computing experience and we are seeing more interest by PC OEMs to adopt GPUs in more platforms. Recognizing that the GPU is one of the most complex processors in the system, it is critical that we now work more closely with notebook system designers and our chip foundries to ensure that the GPU and the system are designed collaboratively for the best performance and robustness."

Huang added, "This has been a challenging experience for us. However, the lessons we've learned will help us build far more robust products in the future, and become a more valuable system design partner to our customers. As for the present, we have switched production to a more robust die/package material set and are working proactively with our OEM partners to develop system management software that will provide better thermal management to the GPU."
Via this NVIDIA press-release.