Simplest date formula: What am I doing wrong?

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This picture should explain it all:

http://i115.photobucket.com/albums/n287/ryansholl/wtf.jpg

I cannot fathom how something so easy could give me so much trouble.

Thanks all-

 

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I selected all of the cells with a date in them and reformatted them for
date. Problem solved.

Should this really have been an issue?