We believe that your issue has been closed by the upload of
Version 0.13.2 of grml-live from Michael Prokop <mika@grml.org>.
The explanation is attached below

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Fri, 18 Mar 2011 14:19:08 +0100
Source: grml-live
Binary: grml-live grml-live-addons grml-live-db grml-live-buildd
Architecture: source all
Version: 0.13.2
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-live  - build system for creating a Grml (based) Linux live system
 grml-live-addons - templates/boot/addons for grml-live
 grml-live-buildd - autobuild daemon for grml-live
 grml-live-db - log package build information of grml-live to database
Changes: 
 grml-live (0.13.2) unstable; urgency=low
 .
   [ Christian Hofstaedtler ]
   * [82e7ad3] fix buildd header (no more unoldstable!)
 .
   [ Michael Prokop ]
   * Bunch of buildd improvements:
     - [f96dfbf] Add support for wheezy, drop lenny (being oldstable
       nowadays). [Closes: issue962]
     - [aaa0017] Rename HEADER.html to index.html, as being
       used on daily.grml.org.
     - [2a5e5e6] Update index.html file.
     - [a08d1d1] Finalize sha1sum support.
     - [b4f406a] Support setting variables through grml-buildd.conf
       in working directory, support $STORAGE_ADMIN instead of hard coded
       mail address for storage host.
     - [79b6032] Fix suite information for wheezy links.
     - [cc7e99d] cronjob: upload and remove ISOs after each grml-flavour.
     - [4d1178f] Use mutt instead of nail again (plus further improvement
       in [79e4473d]).
   * scripts/release_helper.sh improvements for autobuilds:
     - provide autobuild install instructions in official
       grml-live documentation
     - support sudo [c6bcaeb]
     - remove leftover files and directories from grml-live.build-area
       to avoid pollution [307773c] [d0a25f7]
     - provide git log in debian/changelog [83ef159] [833dd6d]
Checksums-Sha1: 
 3b53e4f534192dc9b8ebce7271aa33a79e1dcfa0 951 grml-live_0.13.2.dsc
 1bb35752ea8d9cf75cc6039b99cad47ceae79984 8667528 grml-live_0.13.2.tar.gz
 fb08988de7542e5166bd1fb2edcfe2c2b5643d2b 1338756 grml-live_0.13.2_all.deb
 59e022aee0587813e76ef13f0f93179777b9afaa 7366232 grml-live-addons_0.13.2_all.deb
 8cebfcb94239ff78f7da4eb981cb58fb2003f95c 48424 grml-live-db_0.13.2_all.deb
 325fe7c7f516369771a5e81dfd0a33be195e8354 44122 grml-live-buildd_0.13.2_all.deb
Checksums-Sha256: 
 8e489f073881f109e23aa16197f9bf2dab5b7c618c462466f6c1fc2587520239 951 grml-live_0.13.2.dsc
 efd987f3f6b28bf723931a3b0eab19bea266ffcf064f2f7f7d2f380df2105f6f 8667528 grml-live_0.13.2.tar.gz
 236e821d3dbb842ad27eb42c1997938fc4e5d3f8ab50dd5a5f38c24704911b84 1338756 grml-live_0.13.2_all.deb
 7b7a0cc29048fda6ff93bdaa20b441ed725efb08754c38d1026523bb240f1c3a 7366232 grml-live-addons_0.13.2_all.deb
 d896b50bbc255fdbb86fd44c99f8671befe8dc68d2774e622f8730f5850fde8e 48424 grml-live-db_0.13.2_all.deb
 790e6e591d1c049c724f7a08263e60d3b0e4bd09f51dfdf32dd3e069a79dfcb1 44122 grml-live-buildd_0.13.2_all.deb
Files: 
 2bd1bbb361f703437fc1715735a9ee04 951 grml extra grml-live_0.13.2.dsc
 9892e0b80a8c01ad6cda705030cfd2fe 8667528 grml extra grml-live_0.13.2.tar.gz
 bb1371a71ecd603dc6042343172c8016 1338756 grml extra grml-live_0.13.2_all.deb
 61ebbca0d1a8aa04dc79e99b79262089 7366232 grml extra grml-live-addons_0.13.2_all.deb
 8112b51d4dfd7e916318028432dfe9c6 48424 grml extra grml-live-db_0.13.2_all.deb
 fc46d531380ba7b1471bec1b293c8aef 44122 grml extra grml-live-buildd_0.13.2_all.deb

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)

iEYEARECAAYFAk2DZLoACgkQ2N9T+zficugFAwCfdfXMqWVh/mK8c/SMSp6uuR6X
VUMAnR1R01QtzGWEcjB842Vt9whNpDPd
=bzBW
-----END PGP SIGNATURE-----

At least some parts of this should be done by now in grml-live.

http://daily.grml.org/ as well as grml-live should use squeeze as current stable 
release.