In reply to tezza:
I'd use them, I've only just replaced a harness I've been using for about 8 years (heavy usage for about 4) and I didn't replace it for safety concerns, I just wanted an extra gear loop...
In fact I still plan on using it indoors. Maybe I should check it over.
I'd have a good play with the rope, check it still had some bounce and maybe take it indoors to practice some "soft" leader falls before relying on it halfway up a rock-face.