dovecot-common: Installation impossible because of certificate creation failure

[Klaus Alexander Seistrup]

Package: dovecot-common
Version: 0.99.13-3
Severity: important

#v-

klaus at home:~ $ sudo apt-get install dovecot-common
The following NEW packages will be installed:
  dovecot-common
0 upgraded, 1 newly installed, 0 to remove and 52 not upgraded.
Need to get 0B/240kB of archives.
After unpacking 553kB of additional disk space will be used.
Preconfiguring packages ...
Selecting previously deselected package dovecot-common.
(Reading database ... 136691 files and directories currently installed.)
Unpacking dovecot-common (from .../dovecot-common_0.99.13-3_i386.deb) ...
Setting up dovecot-common (0.99.13-3) ...
Creating generic self-signed certificate: /etc/ssl/certs/dovecot.pem
(replace with hand-crafted or authorized one if needed).
dpkg: error processing dovecot-common (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 dovecot-common
E: Sub-process /usr/bin/dpkg returned an error code (1)
klaus at home:~ $ 

#v-

If I "sudo touch /etc/ssl/certs/dovecot.pem" before attempting to install
dovecot-common, installation succeeds.

-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.6.10-4-k7
Locale: LANG=en_DK, LC_CTYPE=en_DK (charmap=ISO-8859-1)

Versions of packages dovecot-common depends on:
ii  libc6               2.3.2.ds1-20ubuntu13 GNU C Library: Shared libraries an
ii  libldap2            2.1.30-3ubuntu3      OpenLDAP libraries
ii  libmysqlclient10    3.23.56-2ubuntu1     LGPL-licensed client library for M
ii  libpam-runtime      0.76-22              Runtime support for the PAM librar
ii  libpam0g            0.76-22              Pluggable Authentication Modules l
ii  libpq3              7.4.7-2ubuntu2       PostgreSQL C client library
ii  libsasl2            2.1.19-1.5ubuntu1    Authentication abstraction library
ii  libssl0.9.7         0.9.7e-3             SSL shared libraries
ii  openssl             0.9.7e-3             Secure Socket Layer (SSL) binary a
ii  zlib1g              1:1.2.2-4ubuntu1     compression library - runtime

-- no debconf information