I should first mention that I'm running the latest version of the Leopard Beta. Prior to this, I had no issues. If my MacBook is in sleep mode (lid closed) it doesn't wake up when I open the lid. I've tried pressing moving the trackpad, pressing keys, attaching/detaching external devices, etc. It also won't run in clamshell mode. Anyone else having this issue with the Leopard beta or is it just me? EDIT: I just realized the sleep mode indicator light stays solid when I close the lid. Also, the fan comes on soon after I close it. Any ideas? EDIT2: I just reset the SMU but it didn't help. EDIT3: Some people had this issue when they had bluetooth devices connected, but my bluetooth is turned off. EDIT4: Just tried to put it in sleep mode via power button + s and it gave me the solid light business again.