Have you inadvertently altered the language settings of your browser? It;s usually under View > Character Encoding or merely View > Encoding, depending on the browser.
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thanks i will check that should encoding be on auto select?
That's the safest setting but on mine it's defaulted to Unicode (UTF-8) - I think it varies with the language selection for the operating system. Make sure your browsers (all of them - McAfee uses IE for example, regardless of your default browser selection) and their add-ons are up to date. Very important these days with all that's out there.