http://www.anandtech.com/show/4142/intel-discovers-bug-in-6series-chipset-begins-recall 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.". The fix requires new hardware, which means you will have to exchange your motherboard for a new one. Intel hasn't posted any instructions on how the recall will be handled other than to contact Intel via its support page or contact the manufacturer of your hardware directly. In speaking with motherboard manufacturers it seems they are as surprised by this as I am. Intel will begin shipping the fixed version of the chipset in late February. The recall will reduce Intel's revenue by around $300 million and cost around $700 million to completely repair and replace affected systems. .. I asked Intel how we’d know if we had a failure on our hands. The symptoms are pretty simple to check for. Intel says you’d see an increase in bit error rates on a SATA link over time. Transfers will retry if there is an error but eventually, if the error rate is high enough, you’ll see reduced performance as the controller spends more time retrying than it does sending actual data. Ultimately you could see a full disconnect - your SATA drive(s) would not longer be visible at POST or you’d see a drive letter disappear in Windows.