When I was in, I used to time my own talks (I was the assistant at the time). I was just as strict with myself as with everyone else--and always came within 10 seconds of 5 minutes.
I would like to start seeing more talks running under 4 minutes--like 3:30 and under. Or maybe going past the bell on purpose just to get deleted. I wonder who would be left to give all the talks--certainly I would not be giving more than one, once I start sabotaging the Filthful and Disgraceful Slavebugger's spiritual monosodium glutamate with the real truth (and going past the bell on purpose).