It took me like, five minutes for my computer to shut down yesterday. Anymore stuff takes ages to open, too. If I run any CPU intensive games, my computer barely wants to do anything afterward.
It's about four years old, and I think I'm due for a backing up and purging, but is there anything I can do to lube up my computer and increase its response time in the meantime? I've tried defragging and running crap cleaner to no avail.