I have an Access 2000 split database I am trying to run on Access 2007.  Even
tried converting it to Access 2007 without success.  Everything is fine in
Access 2000 and 2003 but not 2007.

I have an administration form with a number of tabs.  On each tab is an
unbound subform to display table data - mainly dropdown list contents.  The
administrator can update the drop down list display through the tabbed forms.
Problem is that whenever I open the administration form, the system freezes
with a "Calculating..." message in the bottom of the screen.  I end up having
to close Access.

I can open the subform on its own without a problem and edit data.  I can
delete all the subforms and open the main form without a problem.  To make it
even more confusing, one of the users tells me she can open the form in 2007
without a problem.  Anyone have any suggestions?