so i upgraded to panther and was playing with the network utility port scan function. i noticed that my computer has several ports open, including ipp and netinfo-local. i'm not running the built in firewall but i have one built into my router. in any event, i'm wondering if these are security "threats". i know that "any" open port can be viewed as a threat, but with all that MS virus/worm junk it has my attention. comments, concerns?