1 person unhappy with another person, both could have some
problem with each other.
2 person unhappy with 1 particular person, both of them could have
some problem with that particular person.
3 person unhappy with 1 particular person, 3 of them could have
some problem with that particular person.
If many many people are unhappy with 1 particular person, I believe
the problem lies with that person.
As usual I believe the replies are:
1) I can't please everybody.
2) I am not at fault, those people are at fault.
3) Those people are lamers, not my problem.
4) I did nothing wrong, those people just keep picking at me.