Intel's Sandy Bridge platform got off to a strong start at the 2011 CES earlier this year before an issue with the P67 chipset sidelined motherboard production for several weeks. The chipset design error wasn't catastrophic by any means and likely wouldn't cause any issues for years to come, but it certainly needed to be corrected regardless. Board manufacturers worked with Intel to replace "bad" boards with those featuring the revised B3 chipset and business is pretty much back to normal at this point.