Its not that The P67/H67 chipsets are defective. The Sata II 3.0 ports are connected through a thinner and weaker bridge compared to the others so they wear down much faster over heavy use. As stated, it is said that only 15% of the chipsets are effected by it and alot of people think it happens to only be the Chipsets made by FOXCONN. Other issues have surfaced because of Foxconn's Lack of....well, their products. If you want to make sure your Chipset doesnt wear out, switch your Optical drive and hard drive cables to the 6.0 Sata or the marvel.