I've been using the Atahualpa theme for two weeks or so, and I have a Mac so I hadn't tested in IE yet. A week ago a friend of mine told me that in IE, the text grows with each post... and it's true! The first post is my designated font size, then each post underneath that is a step up from the previous one. By the bottom of the page, it's HUGE!
It seems as though this must be an issue with Atahualpa or my implementation of it; I have messed around inside the options panel but I have not done any direct edits to the files.
To see for yourself, my blog can be found here:
Thanks so much for any help you can give!