Shareaza

I used to use Shareaza all the time but have not used it for a couple of months. Now I cannot connect. I have version 2.7, Shareaza identifies the IP address, port 6346 is forwarding, however on port testing I get a TCP problem while UDP is open. I then tried uTorrent and cannot connect either.
Any suggestions?
I am using Virgin Media as ISP and they have blocked some torrent sites but I am not aware that shareaza is blocked.

Sorted.
It was a medium setting on the router's security settings.