Hey all- I am using an Apogee Duet with a late 09 Mac Mini, and have suffered through crappy graphics/general performance for some time. I really kinda shrugged this off until getting quite tired of it and did some searching around. After looking around I have discovered that I am not the only one who experiences this problem, and it has been pegged to core audio drivers. Which is odd. Disabling core audio through plists does indeed alleviate the issue it seems. Unplugging the Duet also alleviates this issue. When it is plugged in I see higher temperatures, slower overall performance and very choppy graphics performance, especially in expose and spaces. However this also affects the standard graphics in OSX. So basically certain core audio functions completely degrade the performance of the Mac Mini and generate higher temps. I wrote Apogee in the off chance it would be related to their driver, but considering the duet is core audio compliant, I can't see how it wouldn't be Apple's core audio drivers that are doing this. Especially since the symptoms seem to be a "sequel" to what was seen on the Mac Pro side of things. Does anyone else experience this? If you use a Duet, try plugging it in, and unplugging it and comparing performance. I would very much like this to be resolved somehow, as using the computer WITHOUT the Duet plugged in is how I would expect the machine to feel in general. Running it with it plugged in, is terrible. But I need both units to work properly... Anyone? Apple? Apogee?