Yes, but you haven't tried out every stick of RAM with that motherboard so you don't know if the OCZ is the only one that doesn't have problems. Basically what I'm saying is that you heard somewhere that the DFI was picky with memory, and yet you only have one type of memory. If one person was inept enough to not install their RAM properly or mismanage the timings, doesn't mean that every single stick of RAM by that company won't work, or that everyone else is going to be inept enough to have problems.
I've helped many people build PCs with DFI Lanparty NF4 Ultra-Ds and NF4 SLI-DRs that have also had Corsair ValueSelect (which, FYI, is the RAM that people say DFIs have problems with) and NOT ONE of them has had problems with it. I may be wrong, but there are 5 such systems to my knowledge. So I ask you; I have proof of working systems, do you have proof of failed systems? Or is it as I suspect that you just read some other noob say it on another forum, and are copying him? Hmm, I wonder.