I've managed to get it to connect well, I've managed to get FrostWire to connect, and if I re-install LimeWire it will connect as well, turned out to be ISP problems, but i'm still having the problem with changing ports.
When I type a new port number in and press "Apply" or "OK" the options window freezes, which in turn freezes the whole application - it seems to be with both LimeWire and FrostWire - operating system issue??

Thanks
David