Does it look like this to anyone else?
alt text http://www.freeimagehosting.net/uploads/573787350f.png
Edit: I've edited the image to show the stackoverflow and superuser arrows next to each other. I'm not terribly concerned about the difference in size (although I think that could be the actual cause), but in the straightness of the diagonal edge.
After upvoting a question or answer on SuperUser, the up arrow
vote-arrow-up-in http://superuser.com/content/img/su/vote-arrow-up-on.png
is kinda stretched, like this:
screenshot http://sine.cluenet.org/%7Egrawity/trash/superuser-bug.png
It's a small glitch, but it still annoys me.