Norton firewall has been popping up this message a few times today:

Microsoft Office 2000 component is attempting to access the Internet

At X:XX PM on X/XX/XX, the following communication was detected:
Application: C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\FINDFAST.EXE
Protocol: TCP (Outbound)
Remote Address: www.irs.gov (66.77.65.247) : http (80)
Local Address: Service port 1159
This file is not infected with a virus. There is no autoconfiguration data for this application. This application is from a known company (Microsoft Corporation). This application does not have a digital signature or the digital signature is invalid.
any thoughts?
(btw, my mother just did her taxes on it today)