Problems with classifying packets

Hi I'm using iptables v1.2.11 under Kernel 2.6.10 and I'm really getting in trouble trying out something with qos.
If I mark packages with
iptables -t mangle -A POSTROUTING -o eth0 -p tcp --dport 80 -j MARK --set-mark 0x1
and try to classify them with
tc filter add dev eth0 parent 1: protocol ip prio 1 handle 0x1 fw flowid 1:1
then no packages are classified.
I'm using a structure of a htb qdisc. But it seems that only the default value is sorting the packages but nothing depends on my marking values. Is this an error?

If I classify the things directly with iptables .. -j CLASSIFY 1:1 then everything works great.

Any Ideas???

Greets
Wolfgang Meyerle