While I'm here I might well ask about another thing:
There is this Salome, a CAE software, that I wanted to try out, installed one using the Software centre, piece of cake, played with the soft, got some tutorials, decided to upgrade to newer version - not in Soft Centre, so installed manually - HELL, took me two evenings! Zillion of unresolved dependencies! G++ compiler and the likes - I bet the older version uses all of those too - so how come the installation process could not see/find them???