There seems to be a lot of misinformation and confusion about vdroop and it's detriment to overclocking. Here is some good info for you guys that aren't quite sure what vdroop is and why ppl mod it(I sure wasn't before I read this). Read this guys, especially if you have stability probs.
http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=5
http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=5