You might have the Transition Navigation keys in effect. This option is for
users of Lotus 123 to easily transition over to Excel. Go to the Tools menu,
choose Options, then the Transition tab. There, ensure that "Transition
Navigation Keys" is NOT checked.
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Cordially,
Chip Pearson
Microsoft MVP - Excel, 10 Years
Pearson Software Consulting
www.cpearson.com
(email on the web site)