Hi All, I have a DP 2.72 setup with a G4 533, 256 RAM, OS 9.1, (2) 2408s, (1) 1296 and (1) MTP AV. All with latest drivers. Every once in a while all of the channels will start to click. The clock source is a Mackie d8b w/ the Apogge WC card. A reboot fixes the problem. Another problem is that I have never been able to do a sample accurate transfer from 20 bit ADATS without the exact same clicking. When both 2408s are on, the second one's LEDs light up showing a level from the top 2408 (no signal is being sent to the second 2408 and for experimental purposes nothing was even hooked up to it. I have the first 2408 plugged into the 324 card in the first slot, the 1296 in the second and the 2408 in the third. I really like DP but these are almost deal breaker probs. I'm waiting for 3.0 to see what happens. I wish MOTU's tech support were more like Mackie's!! BTW, I went through 5 trips to GC to get 2408s that work this well.