There's another member (Jivs) recently posted who also has the identical problem & they are also using Rogers. The fact you both can't use 2 different p2p share programs that use different networks & different ports sounds horribly suspicious.

I wonder if you should try different ports. This might not work but might be worth trying. A proxy is another possibility but can be a pia to set up. Go to LW's menu Tools>Options>Advanced>Firewall & change the listening port from 6346 to another. These are ones you can try: 3500, 1203, 80, 20282, 443, & 40475. Press apply after changing. (Not sure if you should close & re-open LW or not.) Go to menu File>Disconnect wait a minute, then File>Connect. Give it at least 15 mins to try to connect. Do this for each of the above port no.'s