Hello all. I have a 2008 aluminum 24" iMac and I use logic and garageband quite a bit. I have an external audio interface (a Lexicon Omega, though I don't think it matters) that got along just fine with my computer until I recently upgraded Leopard to 10.5.7. Now it will periodically inform me that my audio device has been disconnected when it certainly hasn't. I've tried plugging the interface into different USB ports and swapped USB cables, and reinstalled the audio drivers; all to no avail. I'm posting in this forum because it seems to have something to do with Leopard's update. Any thoughts would be appreciated.