SUITE=sid
 CLASSES='GRMLBASE,XORG,REMOVE_DOCS,RELEASE,AMD64'
 ARCH=amd64

% grml-live -F -a $ARCH -s $SUITE -c $CLASSES -o /dev/shm/gl -g $USE_NAME -v "`date -I`" -r $USE_NAME -i $USE_NAME.iso
. . .
instsoft.GRMLBASE    OK.
Calling task_instsoft
Installing software may take a while
Couldn't find any package whose name or description matched "xserver-xorg-video-amd"
Couldn't find any package whose name or description matched "xserver-xorg-video-amd"
Exit code task_instsoft: 321
Calling task_configure
Executing    shell: GRMLBASE/01-packages
GRMLBASE/01-packages OK.
. . .
GRMLBASE/99-finish-grml-build OK.
Calling task_finish
Ramdisk on /dev/shm/gl/grml_chroot/var/lib/dpkg umounted
Thu Jul 15 00:02:39 EDT 2010
The dirinstall took 633 seconds.
/dev/shm/gl/grml_chroot/var/lib/dpkg is not a mounted ramdisk.
Calling task_savelog
End of /usr/sbin/fai
 * Rebuilding initramfs                                                  [ ok ]
 * Error: there was a critical error during execution of stage 'fai dirinstall'
 * Note:  check out /var/log/fai/grml/last/ for details. [exit 2]        [ !! ]

$ apt-cache policy grml-live
grml-live:
  Installed: 0.9.42
  Candidate: 0.9.42
  Version table:
 *** 0.9.42 0
        683 http://deb.grml.org grml-testing/main Packages
        100 /var/lib/dpkg/status

thanks