The problem has little to do with the D4 and a lot to do with your computer. There are about 500 threads on this very issue over at the Computer Audiophile forums:
If its any consolation, most of us have been there, and the problem sucks.
Searched for d4, only got about 10 results and nothing to do with the problem I'm having. Can you link me directly to where you're talking about or if there is a possible solution to my problem?