needrestart package broken wheezy backports

Hello,

Not sure if this is specific to backports; have tried it on two machines, one was ok, the other broken:

Seems to be something broken with debconf.

=== cut ===

root@webby:~# export DEBCONF_DEBUG=developer

root@webby:~# needrestart

debconf (developer): frontend started

debconf (developer): Trying to find a templates file..

debconf (developer): Trying /usr/sbin/needrestart.templates

debconf (developer): Trying /usr/share/debconf/templates/needrestart.templates

debconf (developer): Couldn't find a templates file.

debconf (developer): frontend running, package name is

debconf (developer): starting /usr/sbin/needrestart

debconf (developer): <-- VERSION 2.0

debconf (developer): --> 0 2.0

debconf (developer): <-- CAPB backup

debconf (developer): --> 0 multiselect escape backup

debconf (developer): <-- X_LOADTEMPLATEFILE /usr/share/needrestart/needrestart.templates

debconf (developer): --> 0

Scanning processes...

Scanning candidates...

Failed to retrieve available kernel versions.

SET needrestart/ui-query_pkgs atd, avahi-daemon, cron, cups, fail2ban, postfix, snmpd, ssh, sysv init

<hangs>

=== cut ===

I push enter, I restart getting perl warnings:

=== cut ===

Use of uninitialized value $rc in numeric ne (!=) at /usr/share/perl5/NeedRestart/UI/Debconf.pm line 46, <STDIN> line 4.

SUBST needrestart/ui-query_pkgs OUT Services to be restarted:

Use of uninitialized value $rc in numeric ne (!=) at /usr/share/perl5/NeedRestart/UI/Debconf.pm line 46, <STDIN> line 5.

SUBST needrestart/ui-query_pkgs PKGS atd, avahi-daemon, cron, cups, fail2ban, postfix, snmpd, ssh, sysv init

=== cut ===

dpkg-reconfigure debconf works fine, so I think my debconf has no problems.