MBP using Lion can't get to sleep.

[Nghia Nguyen]

I tried to slam my macbook pro down and assume it'd go to sleep. When I got to school, I found out that the screen didn't get to sleep at all and it drained my batter down (for about 2 hours).

Is it just me or this is a bug from Lion?
Is there anyway we can fix this?

[jeanlain]

You should report Lion bugs to Apple. Lion is a developer preview.

[Embio]

are you booting Lion off USB or the optical bay? I had this problem on my machine till I installed it to the 'proper' drive

[GGJstudios]

Is it just me or this is a bug from Lion?
Is there anyway we can fix this?
It may or may not be a Lion issue:
Mac OS X: Why your Mac might not sleep or stay in sleep mode (http://support.apple.com/kb/HT1776)

[Nghia Nguyen]

So nobody gets this problem when slamming down the lid? Mine still runs when closed. It's so annoying if I have to bring my MBP outside my house remembering I have to shut it down first.

[JeddaHost]

Disable the internet sharing in System Preferences and it should work