Comment 3 for bug 482515

The error was actually with mysql-server:

dpkg: error processing /var/cache/apt/archives/mysql-server-5.1_5.1.37-1ubuntu5_i386.deb (--unpack):
 subprocess new pre-installation script returned error exit status 128
Use of uninitialized value $reply in scalar chomp at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 66.
Use of uninitialized value $reply in concatenation (.) or string at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 67.
Use of uninitialized value $reply in split at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 68.
Selecting previously deselected package pwgen.
Unpacking pwgen (from .../pwgen_2.06-1ubuntu1_i386.deb) ...
Selecting previously deselected package mysql-client.
Unpacking mysql-client (from .../mysql-client_5.1.37-1ubuntu5_all.deb) ...
Processing triggers for install-info ...
Processing triggers for man-db ...
Errors were encountered while processing:
 /var/cache/apt/archives/mysql-server-5.1_5.1.37-1ubuntu5_i386.deb
Log ended: 2009-11-14 01:43:39