What to do if your comp starts to crawl?

Try doing a Greg Billingham. Enter the slow mo marathon. If you're too lazy for that, examine your system. Check if AVG Antivirus has been loaded on to your comp. From my experience I can tell you AVG is a memory hog (although it does its anti virus job well). AVG has this dirty habit of dragging down the speed of your laptop and can make even the proverbial tortoise look like a cheetah. So be ruthless. Uninstall AVG. Restart your comp. And feel the difference.