I need some help fixing ssh.

I recently upgraded to 12.04 from ~10.10. Everything is fine ( excepting the new desktop which is awkward .. but anyway ) except that I can no longer ssh to this machine.

sshd is running and I can successfully 'ssh localhost', but I can not ssh to this machine from another machine on the network.

root@argonaut:~# netstat -lnp --tcp --udp -l | grep ssh
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 899/sshd
tcp6 0 0 :::22 :::* LISTEN 899/sshd

I can neither remote desktop nor ssh and I was able to do these things before.

I need some direction on this please.