I upgraded to Excel 2003.

Now, every now and then throughout the day, for no reason, an open Excel
window will just disappear, closed. Not all open Excel windows. Just
one or two, every so often.

Problem is more severe than this -- I am not prompted to save changes,
and even if I hit the save button after my last change, when I re-open
the file after it mysteriously closed on me, the changes are not there!!!

Has anyone experienced this??

Jaxon