Weird bug, I never had kernel panic cause of torrent software. It probably has something to do with your network adapter.
I would try the following:
1. download newest chameleon loader and try using "ethernet built in"
2. search the networks kategory on kexts.com, maybe there are new kexts for your hardware
3. check which kernel you are using.. and try the 10.6.8 Legacy Kernel from Nawcom http://www.kexts.com/view/1413-nawco...or_10.6.r.html