limewire shows full connection but download rate decreases to 0kbps
 

i've been using limewire for a while now and never encountered this problem till now.
when i open limewire it loads normally and shows a full connection my incomplete downloads (movies) start dowloading as usual but after a minute or two the download rate of these files steadily decreases from around 30-70kbps to 0kbps.my connection still shows full and i cant figure out why this happens. any help would be greatly appreciated

Firstly who's Your ISP & could they have recently started Traffic Shaping?
"Yes They Could"