We believe that your issue has been closed by the upload of
Version 0.9.1 of grml-live from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.8
Date: Mon, 01 Sep 2008 23:51:50 +0200
Source: grml-live
Binary: grml-live
Architecture: source all
Version: 0.9.1
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) live-cd
Changes: 
 grml-live (0.9.1) unstable; urgency=low
 .
   * Rebuild initramfs to make sure that the up2date /etc/grml_version
     is available in the live initramfs. [Closes: issue516]
Checksums-Sha1: 
 07e641dac88fe74450eeb486b49ab609595fccce 848 grml-live_0.9.1.dsc
 2cbb2ae4964a5f04871c7201c4b9c0060f9e751b 2059038 grml-live_0.9.1.tar.gz
 1bde1cb3d5c25586b228082c5cfe2bbf39e97a33 2067206 grml-live_0.9.1_all.deb
Checksums-Sha256: 
 14df568c1aaff518cff85572f785d9a2ba0b850645ef10613883f6e1f5598e64 848 grml-live_0.9.1.dsc
 655fed49700d1b794524d7a734f8a5bb3adefa9321ccf6818431cba606f9b7f1 2059038 grml-live_0.9.1.tar.gz
 ae4e68be159e0cbe6dabc3faeaf3ac1d401c73a046cf8e4415e5cfeabf37b26e 2067206 grml-live_0.9.1_all.deb
Files: 
 3eaff71a85020e7b4f0014e95298f0f7 848 grml extra grml-live_0.9.1.dsc
 7b6806fd5645df5888e030151d0de86f 2059038 grml extra grml-live_0.9.1.tar.gz
 63dce609e7f3c5ab7fddf2d70854d7d5 2067206 grml extra grml-live_0.9.1_all.deb

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... otherwise initrd of live-system provides old /etc/grml_version file instead 
of the new generated file by grml-live.