Who is your isp? What speed plan are you on?

Try downloading a magnet link from here & tell us what happens: http://www.magnetmix.com/video.shtml

Also, do you see a brick wall in front of the blue world icon at the bottom of LW's interface?
Did you configure your firewall so it allows LW full access (advisable not to have 2 active firewalls b/c they can interfere with each other); Firewall configuration instructions (click on link)

Have a look at this MS & 3rd party patches