Joe, et al- My new dual 1GB (bought mid-Decemeber) exhibited similar problems. I took it in after it finally just gave it up and died - the power switch on the front panel turned out to be the culprit... Jay > FWIW, I was in the store to bring my dual-1 GHz dual-mirrored Mk. > 1 in because the ADC video from the Radeon card had died, and the > power button/power manager was acting strange: press the power button > and its LED only glowed momentarily, though the fans came on, the > system booted, and DVI video worked just fine. Even USB through the > ADC connector worked OK, but no video and no power LED on a connected > ADC monitor (tried several, so I know it wasn't the monitor). I was > on the phone to AppleCare before bringing the machine in; they had me > trying to reset the PMU, but that didn't help, nor did multiple PRAM > resets. Anybody seen this behavior? Is it a power problem or a Radeon > one? (I asked if by some miracle if it were the power supply, they > could see their way clear to replacing the unit with one of the new > ones with the quieter fans, but alas, they claimed they had to > replace parts with the identical part number.) > > Score one for OS X, though: even without the video, the system > booted normally, and continued working as an IP gateway for our home > network.