Ktorrent killing the ethernet connection??

Anyone else having this problem? When running ktorrent (to get 10.00GM. Seems a fat chance of that succeeding so far...) I'm getting download speeds of the 0.5kbps to 1.0kbps level, and then after about 3-4mb it stalls. What's more it seems to kill the ethernet connection to the firewall, which I can only bring up again by rebooting the smoothie box or the suse 9.3 box.