All the modules for 2.6.20-grml version grml.04 have been uploaded to grml-
testing.

When upgrading the packages inside the chroot I noticed:

WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol generic_file_read
WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol generic_file_write
WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol crypto_digest_update
WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol crypto_alg_available
WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol crypto_digest_final
WARNING: /lib/modules/2.6.20-grml/kernel/iscsi/iscsi_trgt.ko needs unknown 
symbol crypto_digest_init
WARNING: /lib/modules/2.6.20-grml/misc/snd-bt-sco.ko needs unknown symbol 
try_to_freeze

-> this needs some more attention, I'll check it out in more detail as soon as 
the new ISO build is ready...