aptitude shows error at preinst about innexistent file

Binary package hint: denyhosts

In lucid alpha2 when installing denyhosts on a fresh system aptitude (or apt-get) shows an error form the preinst script:

/var/lib/dpkg/tmp.ci/preinst: 10: cannot open /var/lib/dpkg/info/denyhosts.postrm: No such file

That line is odd and IMHO can be easily avoided.

full output:

root@ubuntu-lucid-alpha2:~# aptitude -y install denyhosts
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
The following NEW packages will be installed:
  denyhosts
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 66.0kB of archives. After unpacking 442kB will be used.
Writing extended state information... Done
Get:1 http://es.archive.ubuntu.com lucid/universe denyhosts 2.6-6.1 [66.0kB]
Fetched 66.0kB in 0s (139kB/s)
Selecting previously deselected package denyhosts.
(Reading database ... 43531 files and directories currently installed.)
Unpacking denyhosts (from .../denyhosts_2.6-6.1_all.deb) ...
/var/lib/dpkg/tmp.ci/preinst: 10: cannot open /var/lib/dpkg/info/denyhosts.postrm: No such file
Processing triggers for ureadahead ...
Setting up denyhosts (2.6-6.1) ...
 * Starting DenyHosts denyhosts [ OK ]

Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done

About the installation:

root@ubuntu-lucid-alpha2:~# cat /tmp/apport.denyhosts.VIFbAF.apport
ProblemType: Bug
Architecture: i386
Date: Tue Feb 2 18:06:52 2010
Dependencies:
 coreutils 7.4-2ubuntu1
 debconf 1.5.28ubuntu1
 debconf-i18n 1.5.28ubuntu1
 dpkg 1.15.4.1ubuntu1
 findutils 4.4.2-1
 gcc-4.4-base 4.4.3-2ubuntu1
 libacl1 2.2.49-1
 libattr1 1:2.4.44-1
 libbz2-1.0 1.0.5-3ubuntu1
 libc-bin 2.11.1-0ubuntu2
 libc6 2.11.1-0ubuntu2
 libdb4.7 4.7.25-8ubuntu1
 libgcc1 1:4.4.3-2ubuntu1
 liblocale-gettext-perl 1.05-6
 libncurses5 5.7+20090803-2ubuntu2
 libncursesw5 5.7+20090803-2ubuntu2
 libreadline6 6.1-1
 libselinux1 2.0.89-4
 libsqlite3-0 3.6.21-2
 libssl0.9.8 0.9.8k-7ubuntu5
 libstdc++6 4.4.3-2ubuntu1
 libtext-charwidth-perl 0.04-6
 libtext-iconv-perl 1.7-2
 libtext-wrapi18n-perl 0.06-7
 lsb-base 4.0-0ubuntu7
 lzma 4.43-14ubuntu1
 mime-support 3.48-1ubuntu1
 ncurses-bin 5.7+20090803-2ubuntu2
 perl-base 5.10.1-8ubuntu1
 python 2.6.4-0ubuntu2
 python-central 0.6.11ubuntu11
 python-minimal 2.6.4-0ubuntu2
 python2.6 2.6.4-5ubuntu1
 python2.6-minimal 2.6.4-5ubuntu1
 readline-common 6.1-1
 sed 4.2.1-6
 tzdata 2010b-1
 zlib1g 1:1.2.3.3.dfsg-15ubuntu1
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu-Server 10.04 "Lucid Lynx" - Alpha i386 (20100114)
Package: denyhosts 2.6-6.1
PackageArchitecture: all
ProcEnviron:
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-12.16-generic-pae
SourcePackage: denyhosts
Tags: lucid
Uname: Linux 2.6.32-12-generic-pae i686