[Falcon4]

Kinda sounds like a running program that's jumping to the foreground.

Are you using any kind of task manager program? WKTask is what solves all the world's problems for me. Windows Mobile is a really poor platform that causes odd problems like that out of nowhere. Alternatively, check out your "running programs" list somewhere in Settings - I think it used to be under "memory" but I can't remember - I haven't used it in so long :P

edit: You can also prevent the buttons from turning on the PPC, I think it's somewhere in the Lock or Power settings, so it'll only turn on with the power button (most of the time at least...), like it should.

edit edit: Ah, it's under Buttons. And that dang "running programs" control seems to have been removed in WM6! Who is the crack pot at Microsoft that thought that move up?
edit edit: "Sprint" PPC-6700, bootloader 1.00 here - is that rare or what?