U/Xu/Ku/Lubuntu is frightingly boring.. I've got a whole bunch of machines ranging from an old P-4 2 Gz to an Intel Core Quad and its stable, never asks anything, figures out stuff on its own when installing and then runs and runs and runs and runs... one of my older machines went from 7.04 to 7.10, 8.04, 9.04, 10.04, all the way up to 12.04 and even when doing a version update it still never crashed or complained about anything, never crashed and its still running..