I tweaked my dsdt some more and now i have perfect sleep, system wakes up on mouse movements. I will send you my dsdt which you can use, i am also preparing a full DSDT patching guide.

Regarding you system i think it is something related to your graphic card. I have 8500GT run from dsdt. I don't know much about ati 3650, i wanted to buy one when my 8600GT died but i didn't, i will upgrade my video card once the SnowLeo is out. Is there an EFI string for ATI3650? Does it work with native drivers without modifying existing ones, opengl.framework etc? Let's figure it out and i will insert it into my dsdt and we'll see how your system is going to behave then.

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