[G4] Leopard troubleshooting

[Robert C. Buitron]

I recently upgraded to 10.5.2 from 10.4.11 without a hitch. Everything 
seemed to be working fine until my computer went into sleep mode. After 
pressing the spacebar key it did not wake up. I continued to have a 
blank screen (I also put my monitor to sleep). So I powered down and 
then powered it up after 10 seconds.

I did a search in Apple's Support site but could not find anything on 
the topic. And I got frustrated with the Leopard support site, as I 
couldn't get to where I think I could have found information.

Has anyone else had a similar experience and what fixes this problem? 
Could someone please give me a link to Leopard troubleshooting just in 
case I encounter other problems.

On another note, does anyone know if Applejack has been updated to 
"clean up" Leopard? It's such a fantastic utility.

I have a MDD, 1.25 GHz, 400/800 FW.

Thanks,
Rob