The Masters

I seem to have the conneting problem some people (just a small group) also encounter on ps3

On previous TW with the same router and the same settings it always worked perfectly for me. What changed on this version ?
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I tried the DMZ solution but it didn't work, tried experimenting with the ports but nothing gets me on the gamernet.

And during normal play i DO get the gamernet challenges to beat and receive gamernet points.

I have a sweex router; if someone is really interested in helping out i could send screenshots

Please help !! I am dying to play this online and never have any problems with other games going online