The UN always holds their applause until the end of a speech. Kofi and his crew were rude but Bush has supporters there as well. Lots of them don't understand english well enough to follow such a speech anyway.
Pretty lame answer. Each seat has a plug for optional ear phones. Every speach is available in the six official languages of the UN. Actually Teresa Heinz originally came to the US to be one of those translators. That is where she met her first John.