Hey, I've just upgraded to 10.6.1 from leopard. Whilst on leopard I had no problems at all with my Macbook Pro (Early 2008, 2.5Ghz) and for the most part snow leopard seems to work pretty well. However I'm having some issues with sleep that I really need some help with. To start with my computer wouldn't even shut down properly after installing snow leopard; it would shut down for 3-4 seconds and then restart of it's own accord. I've tried a few solutions that I've seen in forums for people with similar problems (such as reset PRAM, SMC, repairing permissions and deleting certain PLIST files) and now my mac will properly shut down, but still not sleep correctly. Now my mac will only sleep if it is on battery power and i activate sleep by closing the lid, if I activate it in the menu or if the power cord is connected (by any method of activating sleep) then my mac will sleep then 3 seconds later turn back on. As far as I'm aware I've got no programs that are causing this and I have turned all network and bluetooth 'wake' demands off. I also have nothing connected to my mac. Below are the three relevant system logs: Battery 'Lid' Sleep (working): Battery ' Menu' Sleep (not working) Power cord ' Menu' Sleep (not working) Sorry about the long message, although I know my way around a Mac i'm no expert so would really appreciate any help you guys can give me. Thanks in advance!