This excerpt taken from the MRVL 8-K filed Jul 2, 2007.
The Business generally sells products with a limited warranty of product quality. The Business accrues for known warranty issues if a loss is probable and can be reasonably estimated, and accrues for estimated incurred but unidentified warranty issues based on historical activity. The accrual and related expense for known warranty issues were not significant during the periods presented. Due to product testing and the short time typically between product shipment and the detection and correction of product failures, the accrual and related expense for estimated incurred but unidentified warranty issues were not significant during the periods presented.