Since my last software update my MacBook Pro will not go to sleep. When I close the MacBook or if I initiate the sleep mode through the menu I just tries and then wakes back up. If I clos the MacBook it just keep starting and stopping over and over until I open it again. Ideas?
Pro, Mac OS X (10.7.5), 17" 2.33 GHz Intel 2 Duo, 4GB SDRAM