Short note: Wanted to make a distribution update from Hardy to Intrepid. I made a sudo bash and executed update-manager -d from this terminal but this did not show the new version. Then I have started it with gksu - press ALT+F2 and type in "update-manager -d" - and it was working. This must be a sudo environment issue. So update-manager -d does not show the new version if started from a sudo session but works fine via gksu or su.
Anything I think might be interesting or useful. Planed to be mainly IT related but who knows what happens?