Hi, I have a late 2011 MBP 17" which had ML installed and recently I upgraded to Mavericks. Two days ago I re-installed Mavericks to do a clean install. My mac is not going to sleep mode since the clean install. I have only few apps installed at the moment (iLife, Transmission, The Unarchiver, MPlayerX and Caffeine). None of these apps were running in the background but my mac doesn't sleep. Any ideas on where to look?