What download speeds are you getting?
Do a speed test here & post the results (scroll down to find your country if you're not in the US)
http://www.dslreports.com/speedtest?more=1

You can configure your LW for best performance & that might help your speed a bit.
Configuring LW for best performance

Who is your ISP? Some ISPs use traffic shaping, so it's hard to ever get a good speed. You can try downloading a file from here & see what speed you get
http://www.magnetmix.com/video.shtml