ugh thats dissapointing.
I really hope to have both sleep and a full working magicmouse.
hmmmmm You guys are both on a EX58-UD5 - but might not be related to that. hmm
I'm going to do some more testing and see if I can pinpoint exactly what is causing the problem...
Interestingly on my 10.5.8 install (with Magic Mouse driver installed) sleep works fine. In 10.5.8 the momentum scroll isn't supported I wonder if the driver for this in Snow Leopard could be responsible!?