Plantje,
Thanks for your info / CALL request.
At our production server the ipfclientconfig.xml file was existing (the Server Administrator told me it wasn't, but it was....)
So, when we deleted the file, the Audit entries where there

.
I don't know if you need both, but the file logging is default (I never tried to delete it, but why do you want so?)
Only when you need to use the Audit functionality (and why don't you want it, it give you good information) I know you need to add an entry to the Cognos Configuration.
The logviewV2.exe gets the information from the text file.
(?? Why doesn't have IBM/Cognos this information on the Cognos Forum ??)
(Sorry for my late reply)
ciber