Intel Discovers Bug in 6-Series Chipset - Source

In our Sandy Bridge review I pointed out that Intel was unfortunately very conservative in one area of the platform: its chipset. Although the 6-series chipset finally brought native 6Gbps SATA to Intel platforms it failed to fix issues with 23.976 fps video playback. Intel also failed to deliver a chipset that can support SNB's processor graphics as well as overclocking. Today, things just got even more disappointing.
Intel just announced that it has identified a bug in the 6-series chipset, specifically in its SATA controller. Intel states that "In some cases, the Serial-ATA (SATA) ports within the chipsets may degrade over time, potentially impacting the performance or functionality of SATA-linked devices such as hard disk drives and DVD-drives.".