Thankyou
It is working agan, although i havn't done anything so i am asuming it will stuff up again tomorrow.
My java is 1.5.0_06
I followed the instrutings on the second link.
Contorl panel, network connections, properties and then when i click on the settings button for the firewall a popup says:
Due to an unidentified problem, windows cannot display firewall settings.
UPnp was already on.

I will see tomorrow if it works. Thanks.