New Internet Explorer KB articles
FIX: In Internet Explorer 6, the OnChange event in a field does not occur when you change the "ß" character to "ss" characters, or when you change "ss" characters to the "ß" character
http://support.microsoft.com/default.aspx?scid=kb;en-us;925683
FIX: It takes a longer time to load an HTML page that contains many non-ASCII characters in Internet Explorer 6
http://support.microsoft.com/default.aspx?scid=kb;en-us;908676