So I am RUNNING to the Apple Store tomorrow to return this thing. So anytime I put the computer to sleep, about 5 minutes later it wakes up. The thing will not stay in sleep mode. I called Apple Tech. I ended up doing a CLEAN INSTALL and then putting it into sleep mode. It still wouldn't stay asleep. I even tried turning off the bluetooth keyboard and mouse. All this is in addition to the performance issues that I am experiencing also. Looks like I'll be sticking to my Macbook Pro for a while. Might hold out till the quad cores come out. Likely the best thing to do anyways. Anyone else have this issue?