From time to time a key on my clickety-clack keyboard gets stuck and refuses to register. Usually, I just prise off the keycap, fiddle about with an unbent paperclip or something and hope for the best, but the last time it happened it was one of the letters I need for my password and it was a royal pain. Plus, I've been saying for weeks, if not months, that the keyboard deserved a jolly good seeing to. (I've had it just over nine years now; it's the least I could do.)