sleep and osx 10.0.4 on a bw g3


i had osx running on my computer, and i put it into sleep...i woke up and things seemed to be working. however the date and time control panel didnt work and when i shut it off and then i turned it back on, osx loaded, but i couldnt get into it. it hung right after the boot screen.

I reformated my hd and installed it again, and i turned off the sleep function. i updated to 10.0.4 and i havent tried sleep since. I wonder if its safe to try, and if anyone else experienced problems.
I also have a B/W, and just put it to sleep yesterday.
There were no problems.