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AutoComplete Does Not Work
http://www.vistaarticles.com/articles/177/1/AutoComplete-Does-Not-Work
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Published on 11/23/2006
 
Describes the problem that the AutoComplete box does not appear when you type the same text in the same field on a form.

AutoComplete Does Not Work

This problem occurs because of a problem in the AutoComplete feature in Internet Explorer 6. The problem in the AutoComplete feature occurs after you click the JavaScript hyperlink.

Details: http://support.microsoft.com/kb/924301/en-us?spid=2073&sid=global