Ok. I've been looking around a bit and apparantly you do use image recognition to scan for the names. I've set font smoothing to Standard as you mention on your site.
Here's a screenshot of my lobby, I think the fonts look like they're supposed to look:
I've written a AHK-script myself to scan for the names in the lobby and retrieve some stats, one problem I encountered was that some people use other Windows themes which causes the titlebar to differ in height. This caused the script to use a different place to retrieve the letters. I don't know if this is the case with the language you are using (I'm assuming C#)...