Last week our old computer desk chair finally died. I'd had it for ten years and it was used when I got it, so it really didn't owe me anything -- but it was a bit of a nuisance trying to find something else I could sit in on short notice. Well, I managed to get another used office chair for a reasonable price, and it seemed to be decently made and fairly ergonomically constructed -- but ever since I've been using it my back and my right arm have been killing me. I hope this is just a matter of having to get used to a new chair, and it will pass, but I admit I'm a little worried. I've done enough battling with repetitive strain injuries as it is; I don't want to give myself another one.
*puts keyboard on lap, just to see if it's any less painful that way*