"Rafael Rivera, a Microsoft fan, reports in his "Within Windows" blog that Windows 7 USB/DVD Download Tool, a program to help netbook XP Home users to upgrade to Windows 7, contains "source code [that] was obviously lifted from the CodePlex-hosted (yikes) GPLv2-licensed ImageMaster project."
"CodePlex is Microsoft's open-source-project-hosting site. It's also the name of Microsoft's new "open-source" non-profit group, the CodePlex Foundation."