Safe sleep is no longer working for me. It goes to sleep nearly immediately, even when I have a bunch of apps open, all doing something. I have tried resetting the PRAM, SMC, and whatever it resets when you press and hold the power button and you hear a large BEEEP.

Please help. I clean the computer rather often and I like to use safe sleep to keep my important things alive when I take out the battery.

If it matters, I am running OS X Server 10.4.9 on it. Don't ask.