When you use Microsoft Internet Explorer 6 to open an HTML page that contains many non-ASCII characters, you may notice that it takes a longer time to load the page than it takes to load a similar page that does not contain non-ASCII characters.

Note Non-ASCII characters are characters that have a hexadecimal value that is more than 0x80, such as the umlaut (¨) character.

Details: http://support.microsoft.com/kb/908676/en-us?spid=2073&sid=global