MacBook won't sleep while charging An ongoing problem:  my MacBook Pro (i5, 2.4ghz, 15") won't sleep while charging. I close the lid, but I don't get the pulsing "sleep light", it just stays fully illuminated. If I listen closely, I can hear hard drive/fan activity. 

This has been a problem since purchasing the machine in June of 2010. In retrospect, I should've taken it to the Genius Bar, but I was confident that an eventual system update would fix the problem... it hasn't.  I even wiped the machine clean and reinstalled Lion (due to so me stability issues with the initial release of Lion), and that helped... for a while.  Now the problem is back.  I've even tried a different MacBook charger to no avail. 

I've researched this issue before but none of the solutions that users suggested have worked (including various 'pmset' commands and also tinkering with EnergySaver settings). Any advice?
You may want to look into the sharing options as well as any other programs that may be keeping the computer awake.  If you exit all running programs (you may want to consider checking programs that are running in the background as well) and turn off all sharing under 'System Preferences' -> 'Sharing' and close the lid does it still exhibit the same problems.