I will try if with v3.5 it will work correctly.
The remarks from IBM Lotus support tell me that no actions should be made on the log.nsf as long as the server is running.
So the exclude option would we very helpfull. But as i read your response you make a file for all databases and exclude only the log.nsf.
I would like to see the other way around and only exclude the log.
I will test v3.5 .