For a question like this one, where I got two similar (exact?) answers around 15 minutes after I originally posted the question, I upvoted both and immediately selected one as the accepted answer.
However, it seems the answer I accepted received twice the number of upvotes of the other answer, despite them basically being the same. Am I doing the answerers a disservice by accepting too early?
EDIT: Ian's point is that the quicker answer usually gets more points. However, in this case the two answers were posted at around the same time (I think there was a minute or two's difference). I accepted the answer which got posted second (because I liked it marginally better).
The thing that sort of irks me is that before I accepted an answer, both questions' votes were at 3-3 (or something similar, they were even). After, I saw one question gain a slight edge over the other, and now the other answer is getting half the points...