If its an XLA its probably caused by the slow performance of XL 2007 VBA
reading/writing to ranges.

see http://www.decisionmodels.com/VersionCompare.htm

Charles
___________________________________
The Excel Calculation Site
http://www.decisionmodels.com

"ZedL" wrote in message
...
Anyone who runs AC Nielsens Nitro add-in software in Office 2007
environment?
After almost a year with this setup with extremely slow performance -
I have uninstalled 2007 and reinstalled Office 2003.

Current performance when updating database ranges is approx 18 times
faster
on 2003 vs 2007.

I´m happy - but wonders why 2007 is slower - and if anyone else has this
experience. I cannot find any comment on this on any Microsoft site (or on
Nielsen.com for that matter).