Spot the math error.
http://i52.tinypic.com/23msw13.jpg

Also, there may be a better way to display the ratios, since 1:1 and 1:0 are presently considered equal, which they're not. Perhaps it could show a ∞ or something for ratios when the killed by column is 0. (average ratio could still treat them the same way, though)

yea i have seen that too on occasion, usually resolves itself if you jump or kill someone else

I think it's not actually a math error, the iup label isn't expanding to fit multiple characters properly. I think it could easily be fixed by putting a placeholder "999" title on the labels at creation.

Yeah, it's just cutting off the zero on the 10.