Wrong text alignment in Clock 2.18.1 when panel is placed at left or right side

Binary package hint: gnome-panel

Ubuntu 7.04, 'Human' theme (and any other).

When panel size is default (24 pixels) and 'Orientation' is set to 'Left' or 'Right', clock text is not centered and goes out of panel.
See screenshots below:

http://optirol.com/left.png
http://optirol.com/right.png

ProblemType: Bug
Architecture: i386
Date: Wed Apr 25 13:34:31 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-panel
Package: gnome-panel 1:2.18.1-0ubuntu3.1
PackageArchitecture: i386
ProcCmdline: gnome-panel --sm-client-id default1
ProcCwd: /home/myname
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-panel
Uname: Linux mycomputer 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux