i know this isnt my thread, but I'm having the exact same problem. I'm in college and have my computer hooked up to their cable internet. Limewire worked just fine for awhile, but recently started taking way too long to connect to the network. I had to wait at least 15 minutes before I could even begin to search for songs. Once I chose a song, it took hours for it to download. I uninstalled and reinstalled Limewire, which took care of the slow connection problem, but still cant get my speedy downloads back. I clicked on the link for the test you posted and got the "your test worked" message, and also started a download of one of those magnet files...which currently is downloading at 1 KB/s and will take about 10 hours.

i have an HP pavilion dv 1000. I had cable internet back home and it worked just fine.