I found that the new font (upgraded ROM) was just terrible. I resolved this on my handset by going to the following key and renaming it:
(So, on my handset, I renamed "font" to "jfont".)
There is another key under sys. I don't remember if I added it, or it was already there. (Sorry, I'm on my Mac, and I don't have the registry backup I created to check.) In any event, here is what I have for the values under that key:
I remember I did this because the updated ROM changed the font size to something so small, it was almost useless for me.