I sent an update to the xp calculator hosted by Shade on cbstuff.nl. It includes speed improvements, bug fixes (including having 3-digit levels add XP twice), and support for the new CB logo location (it's no longer hosted on utahpython). It'll be available as soon as he uploads it (you'll know it's the new one because you'll see Mr. Swirly properly).
That said, if you find any other bugs, post them here. Also, for any desired features, do the same.