If you are using a router then it may help to enable UPnP in your router settings.
. Go to your router configuration page (Enter 192.168.1.1 in the url bar).
. Check under the Administration tab, you should see the UPnP option, enable it and save.
I was downloading for 20-60kb/s on beta and once I did this it would get into the high 300s. Not sure if this will help but worked for me xD
Edited, Sep 30th 2010 2:38pm by Kahafer