old xhtml text in muc is displayed like new text, when xhtml is ignored
when "ignore incoming rich content" is enabled and you join a muc, then old text that is xhtml is displayed like new text: not greyed, not smaller: http://img502.imageshack.us/my.php?image=muchistorybw7.png
when i don't ignore it and join the group chat, then this text is small and greyed, as expected.