Problem in installing SharePoint 2010 on Windows 7

Finally the public Beta of SharePoint 2010 is available for download and the good news that we are able to make our SharePoint 2010 Development Environment by using Windows 7 or Windows Vista SP1.

i was setting up my environment and i did all steps and the best practices mention in the MSDN article about setting up SharePoint 2010 on Windows 7 for development, and when i reached the point of running the SharePoint configuration wizard or PSConfig i had an exception in step 8 "Creating Sample Data", this error is very common and its related to a bug in WCF so you must download and install the hotfix before installing SharePoint 2010 and running the configuration wizard