Missing /dev/cdrom and /dev/sr0 when using kernel-2.6.8-1.541

[Mike Klinke <lsomike futzin com>]

As the subject notes my cdrom and sr0 devices are not installed with 
the 2.6.8-1.541 kernel.  Reverting back to the 2.6.8-1.535 kernel 
brings the devices back.  This is on a firewire based cdrom (Sony 
VAIO laptop).

The dmesg logs for the two kernel versions are here:

2.6.8-1.535

http://www.futzin.com/dmesg-535.txt

2.6.8-1.541

http://www.futzin.com/dmesg-541.txt

and while the symptom comes and goes with the version of kernel I 
use, I'm not sure which other packages, if any, may actually be 
responsible for this (any handy hints?)

After booting, I can modprobe "sr_mod" to get /dev/sr0.

I've put the output from lsmod here:

2.6.8-1.535

http://www.futzin.com/lsmod-535.txt

2.6.8-1.541

http://www.futzin.com/lsmod-541.txt

Regards, Mike Klinke