Barb,
Can't see how it would directly Excel/VBA related.
If your network is slow already, could be the network just grinds to a halt.
Need to configure the OSes/network better and/or upgrade something.

NickHK

"Barb Reinhardt" wrote in message
...
I have macros within many excel workbooks that open files on another
server,
extract the data I want and save it in my "master" workbook. They take a
while to run because of network speed. I believe we've started to see an
interaction with Communicator in that when we send IM's when the macro is
running, the macro stops. Has anyone else seen this issue and what do
you
do to get around it (besides shutting down communicator)

Thanks,
Barb Reinhardt