hi again, i just rebooted with madwifi not loaded and checked with dmesg if my kernel is now tainted. it was clean (not tainted)! then i loaded todays v4l-dvb modules plugged the yakumo in and opened kaffeine: same sh*t! scanning went fine but when i tried to watch a channel: hardfreeze... :( now we know it's not because the kernel is tainted! :) steffen