I have an M-Audio FireWire 410 interface, on an iMac running Mountain Lion 10.8.2. 4 GB RAM, built-in FireWire interface. I've had problems where audio would quit working, but restarting and re-booting seemed to clear that up.
Throughput was working - I could plug my guitar into the interface, and I'd get sound out of my powered monitors, using line outs 1 and 2. Occasionally, I could get sound out of GarageBand, too...but now I'mnot getting any throughput sound out of the device at all. Input from the Mac works fine, but input from the front bus inputs (1 or 2) doesn't seem to work at all. Any clues?
Throughput was working - I could plug my guitar into the interface, and I'd get sound out of my powered monitors, using line outs 1 and 2. Occasionally, I could get sound out of GarageBand, too...but now I'mnot getting any throughput sound out of the device at all. Input from the Mac works fine, but input from the front bus inputs (1 or 2) doesn't seem to work at all. Any clues?