I also had one of the first AW4416 units back in October 2000, and I have to say, nothing but headaches with mine also. I had major problems with audio getting fragmented and playing back in random spots after it had been recorded. Yamaha acknowledged this problem, and said that it would be fixed with future OS updates. So I stuck it out for 3 OS updates, and still, nothing but problems. I also tried a different HD, and still, nothing but problems. I remember at the time hearing that other people were having the same problem if the unit was in an area where there were any loud noises (ie drums, loud guitars, bass, etc) that could potentially vibrate the machine slightly, and cause it to skip when writting audio. That didn't work for me because I needed the unit to be in the same room as everyone is playing in. And I also had a problem where a track of audio just totally disappeared on me overnight. That was pretty much the last straw for me, and I went and traded it in for my 001 and an 01v mixer, and no problems since. If anything, I will say that I liked the whole mixer setup, which is why I got the 01v after the fact. But the recording function of the machine... all I can say is that I hope they panned out their problems by now.