I think you have a bug on the notifications page.

Jonah Scheinerman 11 years ago updated by Sarah 11 years ago 0

When I went to check my reply notifications, I saw a new reply, and I upvoted it. After upvoting it the points on the reply went from 1 -> 12. Reloading confirmed that the real number of points was in fact 2. I think you have string concatenation going on when it should be numeric addition.