Response contains illegal characters
I have an Firefox/IE7 compatibility issue here. An Ajax request returns an XML that contains a "°C" in the String. Firefox can parse the XML but IE7 complains, response.responseXML.xml is empty when debugging the script. I tried on serverside to html-escape the message, but then Firefox and IE displays the html entity as is on the screen.
I bet someone else has seen this problem and may have solved it?