PS3 - PES 2011 online gameplay issue

[PS3] PES 2011 online gameplay issue
When I try playing PES 2011 online on my PS3 , I'm getting error messages :

Unable to connect. Test connection to server... too busy
Blocked by router or firewall

• Go to Network Settings
• Select Customize, then wirless, then do Scan. (If you use the wirless)
• Enter the WPA key
• Select PPPOE and enter the user and password to connect to the PS3 Network

Then:

• DNS -> Automatic
• MTU -> Automatic
• Proxy Server -> Do not use
• Upnp - Disable

You will get a NAT .. and there will be no more need to open port on the router.
Launch the game.