Some Launchpad links to source packages with epoch don't work in Chromium

Binary package hint: chromium-browser

Hi

Some source package links from:
https://launchpad.net/ubuntu/+source/git
are working and others aren't

The "Latest upload" link:
<a href="/ubuntu/+source/git/1:1.7.4.1-1">1:1.7.4.1-1</a>
works, but the "Natty Narwhal" link to the latest version of the source package
<a href="1:1.7.4.1-1"><img src="/@@/package-source" />1:1.7.4.1-1</a>
doesn't: if I open it, the address bar shows:
%31:1.7.4.1-1

Cheers,
---
Architecture: amd64
Desktop-Session:
 DESKTOP_SESSION = gnome-classic
 XDG_CONFIG_DIRS = /etc/xdg/xdg-gnome-classic:/etc/xdg
 XDG_DATA_DIRS = /usr/share/gnome-classic:/usr/share/gnome:/usr/local/share/:/usr/share/
DistroRelease: Ubuntu 11.04
Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
Package: chromium-browser 9.0.597.94~r73967-0ubuntu1
PackageArchitecture: amd64
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_GB:en
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 LC_MESSAGES=fr_FR.utf8
 SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.38-4.31-generic 2.6.38-rc5
Tags: unity-2d natty
Uname: Linux 2.6.38-4-generic x86_64
UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare sbuild
chromium-default: CHROMIUM_FLAGS="-start-maximized"