Give utorrent a shot. It has the ability to see if your setting are correct. Just go to options, speedguide and at the bottom you will see "test if port if forward properly"

 While I am behind a router its not wireless. By default utorrent works fine. That may get you a bit further in figureing out what the issue is. Now I am not saying switch to utorrent. I am saying use it to run the tests and try a torrent and see if it does better.

 I see your useing gates latest viru....I mean operating system. Do you stil have xp on your puter or on another partion? Maybe See if all is well on the xp partition if you have it. Just a few Ideas. Hope that helps.

thats wierd i just changed my port forwarding range back to 6881-6999 and seems that im able to connect. Its wierd the port range 59960-60000 works great on my desktop and produces some really fast speeds. I wonder what the problem is