Since this is the official 10.2.3 thread, I thought I'd point out to anyone in pro audio, that 10.2.3 has indeed solved many problems in that area. Specifically, running CuBase SX with a US-428, no more distortion or artifacts. (Unfortunately, there's a new bug, which disallows CuBase SX from launching now under 10.2.3 on a good chunk of computers. I got it to work on one machine, but not another.)