I am running a samba file sharing server on one of my linux servers. I went into the mandrake control center and did a scan of hosts on my network. It was able to detect all my computers plus an unknown IP address (172.136.106.146). I tired to do a reverse IP lookup but samspade.org was down. I have a linksys router which blocks open ports before stuff gets into my network. I am wondering what others might think this is?