Hello,

I read "somewhere" that a workbook with a user definied function will
need some sort of recompilation the first time it is opened with an
other Excel version. I think the source mentioned that this was needed
for performance optimization. Does somebody have more information/urls
on this?
I've searched and searched but can't find the source again ;o(

We experience slow opening of a file with an heavy used UDF before any
VBA code is run.

Thank you.
Nico Saey