Hi, I have a problem in Excel 2003 whereby if we load spreadsheets that use a
specific addin to access a DLL for performing calculations - the "system"
process eats roughly 50% of the available processor time.

This problem happens on 2 machines out of 3 with the same documents, I do
not have this problem on one of the machines.

I have checked the versions of the addin and DLL are the same accross all 3
machines, there are 2 versions of the DLL - both of which produce the same
result.

Interestingly this has just started happening on machines where this has not
been a problem for several months.

I guess if your not sure, but could provide me any information at all about
the system process and how it comes into play in Excel (or when calling
addins/dll's etc) i would be very grateful - tried googling, maybe i need a
better search engine ;)

thanks in advance
Ray.