syberia, 'uninterested means 'having no interest in', 'disinterested' means 'impartial'.
I am completely uninterested in football.
A football umpire needs to be disinterested.
Tabloid editors exploit the confusion between two meanings of 'interest'. They defend publishing some piece of gossip on the grounds that it is 'in the public interest', which should mean 'the public will benefit from knowing this', but actually means 'the public is greedy for this sort of rubbish and will pay good money to read about it'. 