package mount 2.17.2-3.3ubuntu4 failed to install/upgrade: subprocess new pre-installation script returned error exit status 127

[salva]

Binary package hint: util-linux

root@peta:~# apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  bsdutils computer-janitor computer-janitor-gtk cpp-4.4 empathy empathy-common gcc-4.4 gcc-4.4-base jockey-common jockey-gtk libblkid1 libc-bin libc-dev-bin libc6 libc6-dev libcap2 libdbus-glib-1-2 libegl1-mesa libegl1-mesa-drivers
  libgl1-mesa-dev libgl1-mesa-dri libgl1-mesa-glx libglu1-mesa libglu1-mesa-dev libgudev-1.0-0 libperl5.10 libraw1394-11 libsdl1.2-dev libsdl1.2debian libsdl1.2debian-pulseaudio libsensors4 libsgutils2-2 libtextcat-data-utf8 libudev0
  libuuid1 login mesa-common-dev mount nautilus-sendto-empathy network-manager-gnome passwd perl perl-base perl-modules python-software-properties software-center software-properties-gtk udev util-linux uuid-runtime
50 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.3 MB of archives.
After this operation, 65.5 kB of additional disk space will be used.
Do you want to continue [Y/n]?
Get:1 http://es.archive.ubuntu.com/ubuntu/ natty/main login i386 1:4.1.4.2+svn3283-2ubuntu3 [279 kB]
...
Fetched 35.3 MB in 1min 35s (370 kB/s)
Extracting templates from packages: 100%
Preconfiguring packages ...
(Reading database ... 187908 files and directories currently installed.)
Preparing to replace login 1:4.1.4.2+svn3283-2ubuntu2 (using .../login_1%3a4.1.4.2+svn3283-2ubuntu3_i386.deb) ...
Unpacking replacement login ...
Processing triggers for man-db ...
Setting up login (1:4.1.4.2+svn3283-2ubuntu3) ...
(Reading database ... 187908 files and directories currently installed.)
Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_i386.deb) ...
/var/lib/dpkg/tmp.ci/preinst: 49: dpkg-vendor: not found
dpkg: error processing /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb (--unpack):
 subprocess new pre-installation script returned error exit status 127
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@peta:~#

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: mount 2.17.2-3.3ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-3.30-generic 2.6.38-rc4
Uname: Linux 2.6.38-3-generic i686
Architecture: i386
Date: Wed Feb 16 10:34:18 2011
DpkgTerminalLog:
 Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_i386.deb) ...
 /var/lib/dpkg/tmp.ci/preinst: 49: dpkg-vendor: not found
 dpkg: error processing /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb (--unpack):
  subprocess new pre-installation script returned error exit status 127
ErrorMessage: subprocess new pre-installation script returned error exit status 127
SourcePackage: util-linux
Title: package mount 2.17.2-3.3ubuntu4 failed to install/upgrade: subprocess new pre-installation script returned error exit status 127