Azureus tracker mapping

I just recently got a new computer (cause my old one was a piece of shit) and so I have installed Azureus on it. I'm getting really shitty speeds on every download. Stays around 20 kbps the whole time. At first I thought this was because I was downloading a batch file... so I figured the speeds would be slow. But Im downloading Bleach 22 right now and its doing the same thing. Now, I dont know if this has anything to do with it, but every time I start up Azureus it says "port 6881 reserved by (ip address)" And my new ip address is different from the one it lists. Is there a way to erase that or change that? and also... if that isn't the reason why my download speed are so slow, could someone tell me why then?

Thanks....