I have recently bought a Mac Mini which is installed with Mac OS X 10.6 Snow leopard. The problem is I cant put the Mac mini to sleep mode. Whenever I put the mini to sleep mode, it shows that it is preparing to go to sleep and then wakes up immediately. Also sometimes the Mini goes to sleep but it wakes up on its own. If anybody is facing the same problem with Mac mini then please help me in solving this issue. Is this because of the operating system?