I use hub in my
Ethernet LAN. The reason I use a hub is because my ISP is Verizon. It
is their wireless service. The phone lines here are so bad they don't
support Internet. The modem for Verizon Wireless uses an USB port.
That is why I don't use a router. I use Windows Internet Sharing to
place the Internet on the network. Windows Internet Sharing requires
that all computers are set to automatic IP assignment. The Host
computer must be 192.168.0.1. There are four computers on my network
plus an access point which provides a wireless connection for my
Laptop. I have firewalls in each of those computers. But, I don't
think they have anything to do with the Linux problem. Oh, Echolink
works good on any of the XP computers. (All computers run XP Pro except
the Laptop. It has Vista. I have a multi-licensed copy of XP.)

Question 5: 1PV4 127.0.0.1
1PV6 ::1 12 Host

Thats all.

Question 6: I really don't have any other program that uses the
Internet to try. I do have an Internet connection because I downloaded
Wine via the connection. So, the Ubuntu system is seeing my host computer.