Hi goingcrazy,

Have you done the port 6346 test (to see if port 6346 is blocked)? Have a read through this thread, there's a bit of satellite info plus a link to doing the test:
http://www.gnutellaforums.com/showth...274#post189274

I've never heard of Optus blocking or filtering p2p, but it might be worth calling them to make sure