I'm surprized no one has brought up the issue recently blown wide open on
slashdot.org .... http://it.slashdot.org/article.pl?sid=07/09/24/2339203

excel 2007 cannot handle simple math like =850*77.1
you get 100,000 instead of 65,535

any timeline for a fix?
how on earth did this get missed in your beta and QA and testing???

Microsoft, your flagship office app is about to sink because of fundamental
holes, please repair and assure us there are no other problems?
--
JL