Upset can mean a lot of things depending on context. Example : - I am upset because you lied to me. (the listener might be angry or concerned depending on their emotional state). You have upset all my plans. (This could be benign ) I am upset that my dog died ( nothing sinister or bad here - just indicates an emotional state). I will be very upset if the Silly Party win the election (nothing bad here - just indicating a political opinion). (A mother to a child) I will be upset if you eat any more chocolate (save that child from a stomache :-) )

Sorry I made a mistake in the question: Has the verb "upset" just a bad meaning? Probably now it's right, let me know! :) Thanks