Simple bug: You go to your user profile, under the image there is your reputation which links to reputation changes (something like this:

    http://askubuntu.com/users/*****/*******?tab=reputation

However, when you hover over that number (your reputation, under your image, in your profile), it is supposed to be underlined (as I can see in stackOverflow for example), but the line appears 1/3 way from the bottom over the number, kind of crossing the number out. A bit similar to <del>this</del>.