FWIW, MJF, both 4str0m3ch and FLS89 are on the next logical steps following those which I was attempting to cover with you. The third party tech seemed to think it was a hardware issue - so I'd hoped to help you rule those out before blindly dismissing them by jumping into config files and such. Eating an apple requires biting into one side or the other (or the other, and so on...) but in the end, all sides lead to the same core.