Thanks for the screenshots. How very odd. I suspect it's something to do with the video drivers because the same font is working on the buttons in the main menu but not in the list. Also the white corners in the main menu are errorous. What video card do you have or is it one of those Intel chips? I fear the cause of the problem is outside of my game, I use a graphics/audio library named SFML, so I guess I have to take it up there once I know your gfx device info. Mainly I'm interested in if you have ATI or Nvidia.
Would you mind downloading this
and telling me if the main-menu looks any different. Mainly, are the corners different in there. They shouldn't be white blocks but small details instead.