Hey jggimi, thanks for your reply.
I can understand other members not observing threads about pf as they seem to make up roughly 80% of the posts in this subforum.
Just for clarification: The script as posted *appears* to work "just fine". I just have a strange feeling about the rules (especially in the excerpt), as they appear (to me) to follow the "enumerate badness" principle (instead of enumerate goodness). Thus I tried to tighten the rules but the results prevented me from connecting to the internet.
Thank you for spending your time on this issue!