Comment 23 for bug 561585

@SilverWave: trace_b -> ah, thanks; I'm glad that things are not _that_ broken then :-)

I just found a rather general problem in cdrom_id, which produces garbage in a lot of cases. I applied a fix in my PPA. Can you please upgrade to this version with

    sudo add-apt-repository ppa:pitti/ppa
    sudo apt-get update
    sudo apt-get install udev

This should install udev version 151-9pitti2. Can you please try with that one? If it's still broken, please provide an strace again, as well as the output of

  sudo /lib/udev/cdrom_id -d /dev/sr0

(the -d will print some additional debugging information). Thank you!