Hi, Even though I am new to these forums, I hope you take my messages and responses with the same respect as you would from long outstanding members. I work for a educational distributor of Apple machines (do not ask which one; I'd like to remain as anonymous as I can because my co-workers may stumble upon these messages). We have received the very first non-functioning PowerMac G5's. We had planned on using a 1.8GHz G5 for demonstration. The first one we pulled out of the box did not work at all. The power light would light only when the power button was held down and the fans would spin up, but there was no chime, POST, or any other reaction from the machine. We called Apple immediately, and they instantly sent out RMA (Return to Manufacturer Authorization) stickers for the unit. They said that we had "the very first defective PowerMac G5" and they wanted to get it back to the labs for immediate testing. We replaced the demo unit with another 1.8GHz unit. That system worked fine for a week. Then, a few days ago, the second demo unit began malfunctioning in the same manner. The same response from Apple was issued; immediate RMA to the labs for inspection. I spoke with the lab technician who we had been put in contact with, and he said that they had narrowed the possible problems with the first defective unit down to either a power supply issue or the processor itself. He said a full report would be available in the coming week. Fortunately, we have sold a few units to customers, and, so far, none have come back defective. However (and this is my own speculation, which does not reflect any opinions or statements of any Apple employee), the fact that there are possible power supply and processor issues with single processor machines may be indicative of what possible problems there may be with dual processor G5's, therefore causing a shipping delay. Take this information with the usual few grains of salt, as it is only my speculation.