Matt,
One more thing to try... change calculation to Manual and see what happens.
Jim Cone



"Jim Cone"
wrote in message I don't have Vista, but a couple of (remote) possibilities you could try..
Clear out your Windows(?) Temp folder, where ever that is on Vista
-and-
See is turning off the display of page breaks on the worksheet makes any difference.
Good luck with it.
--
Jim Cone
San Francisco, USA
http://www.realezsites.com/bus/primitivesoftware
(Excel Add-ins / Excel Programming)