Hi. I think there's a bug in org-mode, related with subscripts and superscripts. This is the problem:

pastie.org/9142947

And here's the related documentation page:

http://www.gnu.org/software/emacs/manual/html_node/org/Subscripts-and-superscripts.html

"To avoid interpretation as raised or lowered text, you can quote ‘^’ and ‘_’ with a backslash: ‘\^’ and ‘\_’."

I think that's not working (adding a backlash to avoid interpretation of raised or lowered text).