We believe that your issue has been closed by the upload of
Version 1.4.2 of grml-scripts from Michael Prokop <mika@grml.org>.
The explanation is attached below

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Format: 1.8
Date: Mon, 28 Feb 2011 12:31:27 +0100
Source: grml-scripts
Binary: grml-scripts
Architecture: source amd64
Version: 1.4.2
Distribution: unstable
Urgency: low
Maintainer: Michael Prokop <mika@grml.org>
Changed-By: Michael Prokop <mika@grml.org>
Description: 
 grml-scripts - some small scripts which should make life easier
Changes: 
 grml-scripts (1.4.2) unstable; urgency=low
 .
   * [68e8f65] grml-screen/grml-init-screen: no longer use vt-is-UTF8 but
     instead default to UTF-8. [Closes: issue959]
Checksums-Sha1: 
 a24c8162246652a6de140754a4fed7df45c98bcb 962 grml-scripts_1.4.2.dsc
 225a7592893dd5955c7a514255c926f9a4f055ad 215750 grml-scripts_1.4.2.tar.gz
 5fe842da0e78b7c6742d88fdf06ca9a2667cc012 236166 grml-scripts_1.4.2_amd64.deb
Checksums-Sha256: 
 e4715dc061ff75aedaef27f448f3b427dd5d04760200682b80f7bb9066288c98 962 grml-scripts_1.4.2.dsc
 f5d8fe9a6402460977813d5edad0a21fd5c9444982bd41d33916507ec8096539 215750 grml-scripts_1.4.2.tar.gz
 cd174a413e7bd967b472aaf2fa52acaa37e81a6da232a2401d77f53c8308026b 236166 grml-scripts_1.4.2_amd64.deb
Files: 
 f5af8f684a7918fbbeb5921c975f2aa6 962 utils optional grml-scripts_1.4.2.dsc
 358f6275bbfca472daab8571f0077ade 215750 utils optional grml-scripts_1.4.2.tar.gz
 198dd8a56d38aea51db137602cf26ffc 236166 utils optional grml-scripts_1.4.2_amd64.deb

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Due to an oversight in the console-tools -> kbd transition, vt-is-UTF8 is no 
longer available, causing grml-screen to incorrectly _not_ pass -U to screen, 
resulting in a broken terminal on tty2 and tty3.

Can easily be seen when starting 'mc' or (more subtly) any man page.

(Thanks to a private bug reporter.)