Just as myself, my Mac Pro has insomnia... Whenever I put it to sleep, it'll turn back on after 3,4 seconds. I started noticing it a 9,10 days ago when every morning my Mac Pro would be on even though I put it to sleep the night before. Currently I'm running 10.6.7 and I've tried closing all apps before putting it to sleep. I initially thought LogMeIn or Splashtop Remote was causing this, but I've closed both apps and it still didn't go to sleep. Any ideas how to fix it or what's causing it? Thanks!