We believe that your issue has been closed by the upload of
Version 0.8.29 of grml-autoconfig from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.8
Date: Thu, 10 Sep 2009 15:43:10 +0200
Source: grml-autoconfig
Binary: grml-autoconfig
Architecture: source all
Version: 0.8.29
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-autoconfig - main bootup process of a grml system
Changes: 
 grml-autoconfig (0.8.29) unstable; urgency=low
 .
   [ Ulrich Dangel ]
   * modify wget parameter to only try once to download given config.
     [Closes: issue732]
Checksums-Sha1: 
 7dd4750aaae1e19dbcee5eb448645bf127d172f9 935 grml-autoconfig_0.8.29.dsc
 b5877167274691d90ae5de0547403aefd53a90a3 76875 grml-autoconfig_0.8.29.tar.gz
 be8f8a548cae58d97333e6ce787d51418d787741 91336 grml-autoconfig_0.8.29_all.deb
Checksums-Sha256: 
 af4d0d398041798b1af1b3d6bc4120f79f6785831ba90b634c3e60e8ba7598f1 935 grml-autoconfig_0.8.29.dsc
 dea5b0b2bc0ffcd62e8019e4d3520ccbacf82e80d2435e2184d8544c5b2087d5 76875 grml-autoconfig_0.8.29.tar.gz
 d88e141dbbd9f2995a7f832a867293965f21c800d92f378eeca5166247636457 91336 grml-autoconfig_0.8.29_all.deb
Files: 
 ae678cea558f48d65347c26c9637b342 935 grml optional grml-autoconfig_0.8.29.dsc
 92164a10edf0cd50c9ebb3bd08124d51 76875 grml optional grml-autoconfig_0.8.29.tar.gz
 b5ddb7e3363b31b0203df8e01601a93d 91336 grml optional grml-autoconfig_0.8.29_all.deb

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if there is no host with provided ip in netconfig parameter wget tries to get
the file forever. 
See http://shell.spamt.net/~uli/2009-09-09-113517_1024x768_scrot.png

Attached patch should fix that.