What controls font used in headings in the installer?

[lsdaugherty]

I'm trying to figure out why I am now seeing an issue with the font size on the Welcome screen of my installer. This is happening on one machine that I know of, which happens to be my laptop that I recently did a system restore from the recovery partition on. I'm not sure if I accidentally made a change to something in my system that has caused the header to wrap around and be unreadable.

At first I thought perhaps it was something that I needed to change in my own installer, but today I was installing the latest version of DMC, and the same thing is happening that setup program.

I've attached a picture of my welcome screen so you can better understand what I'm asking about. Is this something that you've seen before? Or know what I need to do to fix it and prevent it from happening to a user?

thanks,
Lisa