Hi All! But of a puzzle this one. I have a Dual 1.25GhzDP (FW 800 model), which has all the hallmarks that it is a 1.25Ghz DP - Radeon 9000, 80Gb HD, Airport Extreme, Bluetooth module spot, FireWire 800 port. The ethernet sticker on the back states that it is a 1.25DP, and a search on Apple's serial check also says its a 1.25DP. When I go into Apple System Profiler and About This Mac, they both state its a 1Ghz DP. Also running the latest TechTool Pro 4, it also states that the processor is a Dual 1Ghz. I have also run command line tools which also point to a 1Ghz DP rather than 1.25Ghz. Anybody else come across this? The guy who I bought it from has had the PM since brand new, and said then that the processor always showed 1Ghz DP (and sold it as a 1Ghz DP), but as far as Apple is concerned the machine is a 1.25 (which may have a serious effect on warranty if the processor board needs changing). He is very trustworthy, so I am sure that he has not changed the board, and he doesn't think it has been in for service. I have tried resetting Open Firmware and PMU reset. Any ideas? Seeya Rod!