Blender
This is a silent installer and uninstaller for Blender, a open source 3D modeling problem.
The version 2.49b [1] installs without problem :
<package
id="blender"
name="Blender"
revision="1"
reboot="false"
priority="0">
<check type="file" condition="exists" path="%PROGRAMFILES%\Blender Foundation\Blender\blender.exe" />
<install cmd='"%SOFTWARE%\divers\blender-2.49b-windows.exe" /S' />
<upgrade cmd='"%SOFTWARE%\divers\blender-2.49b-windows.exe" /S' />
<remove cmd='"%ProgramFiles%\Blender Foundation\Blender\Uninstall.exe" /S' />
</package>
There were problems with version < 2.47 (or greater?) due to a bug in the install script used by Blender which causes it to prompt for user input even thought it was launched silent mode.
The uninstaller has the same problem too even for v2.43. It needed the Visual C++ 2005 Redistributable too.