All of the JavaScript functionality of the forum (which includes most of the "nice" features like multiquote) are currently broken for some reason or another. I'm sure it will be resolved soon.
took me all day to try to put up a post because the whole text would lose all formats and layout. i usually work with firefox, but loaded up Internet Explorer just to see if i'd have an easier time... it was somewhat easier, still messed up but fixable, mostly.