I have a 13" MacBook Pro (April 2010 Refresh, higher end model) I just installed Mac OS X Lion via an upgrade and install from the MAS After a period of inactivity, my MacBook Pro went to sleep as usual. Or I thought it did... ... the sleep indicator was not breathing. I know that sometimes takes a few minutes (for the computer to fully sleep), but this was over an hour and a half of inactivity. The trackpad and keyboard did not wake the computer. Tapping the power button woke up the computer as normal, and all activity resumed. After a few hours of use, I can tell this how the computer always "goes to sleep" after a period of inactivity. However, when I do Apple --> Sleep, to goes to sleep the normal way, as it did in snow leopard. What gives? Anyone else having this issue?