Agreed. The memory isn't at all the common problem here, since 3 sets have been tried out and the problem is still there. If it's the same motherboard, the perhaps the motherboard should be in the Dog Pound?
But you'd think at least ONE thread would be started trying to solve this problem before question a brand. We can help ya dude. Free Clinic, HMB/B, or even your peers in the Club can at least attempt to help ya. The club type may even send variants for trial, just to make sure that's the issue before going further...no RMA needed. But until all these efforts are gone through, no one belongs in the dog pound.
Case in point. I have known working OCZ DDR2 pairs that work. Have worked for years, and in the same build it's worked since installing Win7 HP. Hated it, moved to Win7 Pro for her machine, and it's 4 days of battling. Constant locks and only boots after a BIOS reset and one stick removed. Knowing it worked before had me ruling it out, but was getting really grim with the results it was giving me. Any of the OCZ I stuck in failed. OCZ was bad, or reinstall Win7 Pro again. Nope. A couple bright ideas, and it's chugging along for 3 days now. None of the bright ideas were based on the memory set, and I feel bad for even doubting the sticks.
The problem was in the board's BIOS and it's limitations with the Chipset...a perfect storm. I could rag on Brand Y, or Brand Z, but in the end it was me as the builder. That's what we deal with...we take this stuff on ourselves and own the support.