Well, early this morning I found an old thread discussing the possibility of some ISP's blocking P2P ports so I changed my port to one of the recommended free ports. Nothing.

Tested with the link I provided and it says the test worked. Tested with the link you provided and I'm not showing a connection. Here's the log:

Data dump: v1.9rc3,to=5,ipf=no,ip=70.58.133.135,proxy=,port=5 1222,lang=en,el=0,php=4.3.2
host=www.shareaza-france.com,path=/test/index.php,t=2005-11-15T15:00:08Z

Start connection test for TCP...
Get socket.
Attempt to connect to 70.58.133.135 on port 51222.
socket_connect() failed, error 115: Operation now in progress.
(Ignore the previous error reason, it's a timeout instead.)
Close socket.
Done, return code: 'TIMEOUT'.

Start connection test for UDP...
Get socket.
Attempt to bind to 0.0.0.0 on any port.
Send /JCT: 3x12 bytes: GND\002sq\001\001\020JCT
Read response:
No proper answer received.
Close socket.
Done, return code: 'NOTHING'.