Hi I purchased CoolBook in the hopes of trying to shut the noisy fan up. I did not care much about my core shut down issue, only happened with high intense activity which is rare for me. The core stopped shutting down after I installed CoolBook but the fan problem remained. Now I am trying to get a replacement from Apple and I want the core shutdown problem to return. But now even with CoolBook uninstalled the core won't shutdown!!! WTF? Please help me reproduce the core shutdown issue!