Leopard 10.5, problem sleeping

[cChris]

One of the reasons I wanted 10.5 was that I was hoping it would fix the problem my iMac G5 has been having with going to sleep. For the past few months it won't go to sleep on it's own(via Energy Saver settings). It sleeps fine and awakes fine when I go to the Apple menu and put it to sleep manually. I've tried all the tips I've found on the intertubes and none have worked. Leopard didn't fix this problem and the irony is that my MacBook is now having the same problem after installing 10.5 . It went to sleep fine prior to installing 10.5

Is anyone else having issues with their computers going to sleep since installing Leopard?

thanks

 

[levitynyc]

Since I've had my iMac I've had inconsistent sleeping. Leopard seemed to fix it, but sometimes it would work fine for a few weeks and they it either wouldn't go to sleep or even turn off the screen, so I can't say for sure yet.

 

[age234]

I haven't tried it from the Apple menu, but clicking on the Sleep button on the login screen does nothing.

But when you click the Shut Down button after that, it goes to sleep. But then it immediately shuts down after waking it up again.