When I leave my Hackintosh idle for about 15 minutes, the CPU usage rises to about 12%. Okay, so here's the real mind{censored}, as soon as I move my mouse or keyboard, the CPU usage drops back down to 0%.
I left Activity Monitor open to observe which files are causing this problem. Activity Monitor Screenshot
It seems coreservicesd, distnoted, loginwindow, WindowServer, launchd and diskarbitrationd are to blame.

Does anyone know what's going on? Please help if you can.