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?