I got a M-audio Trigger Finger, and I constantly have to rescan the device. If I don't use it for a minute or so, I have to rescan it. Last night I was using it for a long time and it just stopped. SO I rescanned like I always did, and then it stopped working again within 10 secs. So another rescan and the same thing. I just quit after that. I was using GarageBand. I'm still a noob to digital audio, so maybe I'm missing something.