I've looked around for answers and can't find something that works for me.
I have a unibody aluminum MacBook Pro and it just doesn't seem to want to sleep when I close the lid. The problem started after installing Lion.
When I close the lid, it appears to go to sleep (i.e. the Apple logo dims) but the status LED stays on and within 5 seconds, the Apple logo is back on. Lifting the screen very slightly reveals that the screen is on at this point.
I know that it's not sleeping and waking when I close the lid because
syslog | grep -i "wake reason" does not show a wake entry for the time the laptop wakes up.
So far, I've tried PRAM reset, SMC reset, disabling all sharing and bluetooth options. It does sleep with the lid shut when booted in Safe Mode though. This leads me to believe that it's some kind of software or setting that's preventing sleep but I know no way of figuring this out.
Is there any way to fix this or find out what software is preventing sleep?