http://bandwidthplace.com/speedtest/ is very popular , here are my results with cable :
Speed
3.7 megabits per second
Communications 3.7 megabits per second
Storage 450.8 kilobytes per second
1MB file download 2.3 seconds
Subjective rating Awesome
You can also go to
Speed Guide , and scroll to their " tweaking forum " to speed up your broadband . The link i posted for the speed test , is only good for three a month so run a test now and again after some " tweaks " from the Speed Guide forum.
You will have to start a thread posting your system and settings before they can adjust any settings for you .
...........good luck