If your file does not contain characters other than ASCII (code pages 128 and above), UTF-8 without specification is the same as ASCII, byte for byte - therefore Notepad ++ is mistaken.
What you need to do is specify the character encoding when serving the AJAX response - for example, with PHP, you would do this:
header('Content-Type: application/json; charset=utf-8');
The important part is to specify the encoding with each JS response - otherwise IE will return to the default encoding for the user system, which is an error most of the time.
Piskvor Aug 31 '11 at 11:12 2011-08-31 11:12
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