I have a new problem that appeared and happens in both logic and garageband on every softsyth channel. When I select the midi instrument, a pulsing noise begins to eminate from the channel! If I treat it as a stuck note, it only goes away momentarily. This never was a problem before. I upgraded to snow leopard a few days ago, but this was hapening in leopard as well. It also happens whether or not my pcr-800 is plugged in or not. Any help would be greatly appreciated!