Ram doubler disables virtual memory on boot as they do the same thing. Ram doubler is supposed to be more effiecient than Virtual Memory. L2 upgrades by Sonnet as I have been reading were very buggy because of the on board cache and extension that loads at boot to enable it. That in itself is why its most likely irritating for you. My issues are at boot and considering the motherboards are pretty much the same now you know why sonnet upgrades cause issues in our machines.