Bleeding edge OS in slightly unstable non-shocker.
Ubuntu is not dissimilar in that respect, but Debian/Synaptic seems to handle dependencies better.
Bro went from Umbongo 10.04LTS to 12.04 LTS (actually an update four versions apart) with no problems...without my input either. Just hit 'upgrade' and left it run while he browsed the web. Really rather impressive.