We believe that your issue has been closed by the upload of
Version 0.11 of grml-debootstrap from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.7
Date: Sat,  6 Oct 2007 18:03:16 +0200
Source: grml-debootstrap
Binary: grml-debootstrap
Architecture: source all
Version: 0.11
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-debootstrap - wrapper around debootstrap for installing plain Debian via grml
Changes: 
 grml-debootstrap (0.11) unstable; urgency=low
 .
   * Better inform user about already executed stages.
     [Closes: issue299]
Files: 
 e3e16eaf2fb927553afddf1acf3d64b3 682 grml optional grml-debootstrap_0.11.dsc
 40a92ed331b8e5f37e56a24070b2e0c8 43965 grml optional grml-debootstrap_0.11.tar.gz
 bafbd38bc42c09d1a4236a6008f3ceb1 18814 grml optional grml-debootstrap_0.11_all.deb

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When bootstrapping fails (might happen in an early stage due to network 
problems) we should notify the user of /etc/debootstrap/stages and how to use 
that.