Regular Computer Maintenance
What do you do for regular maintenance of your OWN computers. I'm talking how often do you clean out the junk files, defrag, run a disk check, run a fill virus/malware scan, blow out all the dust, clean your keyboard, etc. I'm mostly interested in what you do for your own computers but you could also say what you recommend to customers.
Personally I tend to do all of those things once I feel I haven't done them in awhile. If things start to slow down I'll clean it all up. The one thing I do do is record the dates I open the case up and clean everything out, I try to keep on top of that before dust starts to cake onto parts.