Update your Java to 1.6. Use the JRE offline installer & remove any ohter Java versions on your computer before you install the new one.
http://java.sun.com/javase/downloads/index.jsp

In LW go tools > options > advanced > firewall config. Change LW's listening port number to 64049 (or something in the range of 49152 - 65535). Apply > ok. See if that changes anything.

Enable UPnP within your router. Then use the UPnP option on that same LW page where you changed listening ports. Apply > ok.

If that doesn't change anything, try port forwarding for your Westell. Here are the instructions.
http://www.portforward.com/english/r...W/Limewire.htm

Remember that LW's listening port, port within the 'manual port forward' box & port forwarded within a router must all be the same number.