Picked up a set of 16GB ram @ Fry's and ran it through memtest probably 10+ times. However, I've noticed some random lockups/hanging that don't quite cause Kernel panics, but definitely seem to be a problem. I noticed Corsair has 2 SKU's for this Ram, both with the same specs, but one is tagged as Mac memory, the other as General Purpose.. Anyone here experiencing the same type of problems? Thanks!