So, I don't know if anyone else here is running Leopard Server, 10.5.2.
I have an issue where in energy saver, under options for Power Adapter, if the "Allow power button to sleep the computer" is unchecked, the power button will still sleep the G5. I have tried enabling it, rebooting disabling it, rebooting again and nothing is working. I have a Dual 2GHz G5, so I would think that it should work. It worked fine in 10.4 Server.
I don't like to have my Server at risk of accidental button pushing...