I have the PPC-6800 from Alltel and I had the same problem with the power button. Alltel shipped the phone back saying that it was physical damage!! Can you imagine that! The phone is 5 months old and doesn't have a scratch on it!
Can any one suggest a website were I can find this to be a known issue with the PPC6800, Mongul.... I don't really know the way around this. I called customer service and disputed the findings. If anyone has a suggestion please write back.