When I run
apt-cache show nginx
I get
Package: nginx
Priority: optional
Section: universe/web
Installed-Size: 90
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Kartik Mistry <kartik@debian.org>
Architecture: all
Version: 1.4.1-3ubuntu1
Depends: nginx-full | nginx-light
Filename: pool/universe/n/nginx/nginx_1.4.1-3ubuntu1_all.deb
Size: 5854
MD5sum: ac2892b64e0ceb6b4a02b4371ab9559c
SHA1: 33eac40815bb96a58b001902b9cc4f7bfb866cd3
SHA256: 4ecacf3682e7ec4903cb8dcb752c9a3d3fa80811447dfc6a23e803c460bc663e
Description-en: small, powerful, scalable web/proxy server
 Nginx ("engine X") is a high-performance web and reverse proxy server
 created by Igor Sysoev. It can be used both as a standalone web server
 and as a proxy to reduce the load on back-end HTTP or mail servers.
 This is a dependency package to install either nginx-full (by default) or
Description-md5: 19a4ea43e33eae4a46abf8a78966deb5
Homepage: http://nginx.net
Description-md5: 19a4ea43e33eae4a46abf8a78966deb5
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
but it's printed twice. The same happens with apt-cache show firefox.

Other ones work fine: apt-cache show with geany or gedit or medit or google-chrome-stable give the data just once (as expected).

Does anyone else see the same?

This is on 13.10.