Thanks to Stefan Kreuger who runs InstallSite for sending along an additional link with some more information about automatic Windows Installer repairs that I talked about in my previous blog entry. Check it out at http://www.msifaq.com/a/1037.htm. There is information about the specific entries that get created in the application event log and an additional link to a good explanation of issues caused by consuming MSMs into an MSI package. There is also a VBScript that you can download that can help diagnose root causes for some of these repairs. Hope this helps!