We have a problem with our HD. Sometimes appear a message saying "Could not play/master because the CPU was unable to process the video quickly enough. Stopped at xx.xx.xx.xx" (refered to a random timecode). Our configuration is a G5 Dual 2,5GHz, 2GB RAM, ATTO UL4D with the latest drivers and firmware and Mac OS X 10.3.6 as they say in the Compatible Peripherals Guide. We've tried a lot of configurations, changing OS, SCSI Controllers, antoher G5, etc.. but the problem persist. When this error appears we spend a lot of time trying that Media 100 HD works again.