Hi there, I have found great happiness with my mac but recently I have noticed a small irritating problem. I always leave my mac on (one of the things I love about it) but it recently refuses to automatically sleep. It does sleep if i push the power button or choose sleep from the menu, its the energy saver preference that fails to work. It must a program doing this but are there any 'simple' ways to troubleshoot this problem? I have MOZY installed and have just installed/uninstalled VMWare. Please help!!! advice required!! Cheers, Paul.