plone/Products.CMFQuickInstallerTool — pull request #1 by rochecompaan (2012-03-07 09:54:09+00:00)
Title: Remove InstalledProduct instance when a product is uninstalled

Leaving the instance around can prevent settings from being stored properly on
subsequent installation of the product. See this thread for an example of how it goes wrong: http://groups.google.com/group/dexterity-development/browse_thread/thread/975dd547b02f8e1e