I am in urgent need of assistance here. A few days ago my mac was working fine. Then images stopped loading on some websites like wikipedia. Then this morning I open up the laptop and every application starts freezing as if there was not enough ram. I have 16Gbs of ram. I checked activity monitor and it showed that applications were taking up more ram than they normally should for no apparent reason. System functions such as force quit, sys. prefs., and even about my mac freeze after finally popping up 10 min later. Even basic functions such as changing the volume and brightness are delayed by 2 minutes from when I push the corresponding button. I run 10.8.3 with 2.7 GHz i7 and 16 GB 1600 MHz DDR3 RAM all on a 750GB SSD. I was barley able to write this post. Help.