Mine won't sleep now. Never had this problem before. No other problem so far though. I did an online update, not the combo.
I don't see any errors in the logs.
MB: MSI Z77MA-G45
update: Got sleep working again by reinstalling the GenericUSBXHCI (USB3) drivers and removing darkwake=0 from the org.chameleon.Boot.plist. Don't know which fixed it though.