Almost perfect but panik at kernel

installed ipc 10.5.6
im on
amd 4400+ x2
4 gig ram
8500 ichill nvidia gt
on a sata drive

all installation went well on a voodoo kernel and needed drivers, booted greatly all sounds grfx are working, sleep shutdown restart is all good, networking is great can connect to vista and vise versa speed is great BUT if i download something i get a kernel panik... maybe its the download spike that couses the panic? any help or sudgestion? im fairly new here in this forums
by the way i used little snitch 2 but it just crashed my system

chow