Comment 10 for bug 399938

on the same x64 box:

$ apt-get source evolution-data-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
NOTICE: 'evolution-data-server' packaging is maintained in the 'Bzr' version control system at:
https://code.launchpad.net/~ubuntu-desktop/evolution-data-server/ubuntu
Please use:
bzr get https://code.launchpad.net/~ubuntu-desktop/evolution-data-server/ubuntu
to retrieve the latest (possible unreleased) updates to the package.
Need to get 32.0MB of source archives.
Get:1 http://archive.ubuntu.com karmic/main evolution-data-server 2.27.92-0ubuntu1 (dsc) [3024B]
Get:2 http://archive.ubuntu.com karmic/main evolution-data-server 2.27.92-0ubuntu1 (tar) [32.0MB]
Get:3 http://archive.ubuntu.com karmic/main evolution-data-server 2.27.92-0ubuntu1 (diff) [33.2kB]
Fetched 32.0MB in 2s (10.9MB/s)
gpgv: Signature made Mon 07 Sep 2009 04:17:35 PM CEST using DSA key ID A2D7D292
gpgv: Can't check signature: public key not found
dpkg-source: warning: failed to verify signature on ./evolution-data-server_2.27.92-0ubuntu1.dsc
dpkg-source: info: extracting evolution-data-server in evolution-data-server-2.27.92
dpkg-source: info: unpacking evolution-data-server_2.27.92.orig.tar.gz

gzip: stdout: Broken pipe
dpkg-source: error: gunzip gave error exit status 1
Unpack command 'dpkg-source -x evolution-data-server_2.27.92-0ubuntu1.dsc' failed.
Check if the 'dpkg-dev' package is installed.
E: Child process failed