Re: student seems to not like you as a person
If I for some reason get p..... off by somebody on the mat (or off) I try to use it as a chance to learn something about myself. Sometimes I fail.. sometimes I actually learn something of value.
Usually I find that what I don't like about them is something that reflects back on me, so it's a great chance to get a more varied look upon one self.
It takes an effort though which again requires energy and time, and sometimes it's better to just accept the fact that we can't always get along with everybody.
Since the problem here is different then try not to let it bother you too much. Unless this individual is stirring up a bad feeling towards you among the other students, then just treat him/her with respect and as little interaction as possible. If on the other hand it has a negative effect on the class or the dojo then go with Greg's suggestion and ask (in the proper setting) if there is something you have done or said that for some reason makes him hostile towards you.