Yes, its a very common problem. Sleep is also hard to get working right.

You should try sleep enablers kexts. I haven't bothered with them because my laptop never sleeps, and is shut down only one, twice a week.

You can deactivate it in preferences, so when you shut down the lid its stays on, good to move it around.

Sleep is nice, but if abused makes OSX a bit slower with time, when you reboot its "normal" again, and I find the difference between full waking up and normal boot not to compensate the hassle.

Especially is SL ! Shutdown if faster than sleep in real macbook with Leo

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Acer 6936g 864G32mn [@ Snow Leopard 10.6.1 32/64bit
C2D 2,4Ghz 4Gb 1066mhz DDR3 9600m GT 512 GDDR3

___Snow Leopard tutorial -> http://www.infinitemac.com/f57/guide...ted-for-t4183/
_________Leopard tutorial ->http://www.infinitemac.com/f19/guide...-iatkos-t3357/