Hey folks, I'm at a loss. I have been using my M-Audio Firewire 410 (with latest drivers) with Logic Express 8 for a few months with out incident. The other day I turned everything on and when I went to use either Logic or Garageband with my guitar or bass I get a horrendous "electronic" sounding buzz in short bursts and cracking throughout. I tested with the software instrument and it records fine without and buzzing or cracking. The buzz is also recorded onto the track so when I listen back I can hear the sound. I changed all the cables (instrument and firewire) which didn't fix it. I than connected the M-Audio Firewire 410 to my iMac which is running Leopard and Garageband, no Logic and I had no issues. My question is could I have damaged the firewire card in the Macbook Pro? I am aware of the "hot swap" issues with the 410. The Macbook Pro does find the 410 and external hard drives. Is this buzzing a symptom of software or hardware? You can hear a sample of the buzzing here Thanks for any assistance.