Is the port test still not working?
Did you try port forwarding & did you make sure to set up a static IP address first?
Did you try installing the older Java version (linked to in the 'if LW will not connect' thread)?

What has changed since you were last able to connect (new computer, hardware, programs installed etc)?
If the port test still doesn't work, maybe it's your ISP blocking ports.
Try one of these other gnutella clients...see whether any of those will connect.
Phex
BearShare
FrostWire