I'm comfortable editing plists, if that's required to set the font choice. I had the same issue in a previous version, and when I brought it up in the IRC room, I was given a tip on which plist the font setting was stored in. However, after some upgrades, my changes were lost.

Has anyone figured out how to set the font?

Why isn't my font choice respected for both my text and my buddy's text? I choose Verdana 10pt, and their messages appear in that font, but mine appear in a smaller one - I think Helvetica. How can I set all text to the same font?