Crash! The art of flinging things from a trebuchet isn't quite an exact science; there's the story of a huge trebuchet built for the siege of Mexico City that threw its first rock straight upwards and destroyed itself. We came close here; the newsserver landed right beside the treb with a resounding crash. You can see it just to the right of the front of the trebuchet.
I'm fairly certain now that I need to shorten the treb's sling whilst flinging heavier loads.
So, the bottom line: do I trust INN as far as I can throw it? Well, considering that the net throw was zero metres forward and a metre sideways, I'd have to answer with a confident "yes".