We have an ordinary worksheet with an ActiveX listbox
from the Control Toolbox on it. The listfillrange is
dynamic - ie its linked to a table that can grow or
shrink. The odd thing is that everytime a recalculation
is done, even if its a different sheet, the physical size
of the listbox shrinks a bit each time.
As far as I can see, there's no hidden code or anything.
Tthe sheet zoom is 100%. If we set the width and height
properties of the listbox, it still shrinks.
This is only for one particular workbook - I cannot
replicate the strange behaviour on another workbook.
OS XP Pro, Excel XP

Any thoughts would be most welcome

Patrick Molloy
Microsoft Excel MVP