those added IP Addresses that send a lot of UDP... erm, those are primary users on major ISPs, peer guardian by default blocks several major ISPs - filtering that traffic filters just as much legitimate traffic and will block you from being able to download from/upload to users on those ISPs that the list maintainers have deemed "unworthy of being allowed on the internet"... i personally advise against the use of peer guardian as the patch does all of the required filtering plus more
