Cut, copy & paste functions in Excel 2007 are extremely slow.

I just got a new Dell with Office 2007. Computer is a Vostro 430 with 4GB of
RAM and a 2.8GHz processor. Cut, copy and paste operate extremely slow in
Excel 2007, even if I only have one cell to cut, copy, or paste, with nothing
else in the spreadsheet. The action is always completed, but may take a
minute or more. It was this way when I first tried it, right out of the box.
I suspect there is something set wrong. Notably, I'm having similar
problems in Word 2007. Everything else on the computer that I've tried
works great, including Publishing, other facets of Excel and Word and
numerous other programs. Anyone have any ideas?