Can't write to CI adapter on device 0

[linuxtv at nzbaxters.com (Simon Baxter)]

> Looks like VDR can do ioctl() calls on the CI file handle, but
> no write operations. Do you have write access to /dev/dvb/adapter0/ca0?
> 
> Klaus

Hmm, I'm running as root.  And just in case, I :
chmod -R 666 /dev/dvb/adapter0/*
chown -R vdruser /dev/dvb/

[root@media1 vdr-1.5.2]# ls -l /dev/dvb/adapter0/ -l
total 0
crw-rw-rw- 1 vdruser root 212, 6 Apr 30 19:34 ca0
crw-rw-rw- 1 vdruser root 212, 4 Apr 30 19:34 demux0
crw-rw-rw- 1 vdruser root 212, 5 Apr 30 19:34 dvr0
crw-rw-rw- 1 vdruser root 212, 3 Apr 30 19:34 frontend0
crw-rw-rw- 1 vdruser root 212, 7 Apr 30 19:34 net0


but I still get the same error...??