Sam writes "Ars Technica reports: Microsoft has pulled the Windows 7 USB/DVD Download Tool from the Microsoft Store website after a report indicating that the tool incorporated open-source code in a way that violated the GNU's General Public License (GPL). Whether the software giant is actually violating the GPL, a widely used (including by the Linux kernel) free software license, is not confirmed. "We are currently taking down the Windows USB/DVD Tool (WUDT) from the Microsoft Store site until our review of the tool is complete," a Microsoft spokesperson told Ars. "We apologize to our customers for any inconvenience." The fact the company pulled the tool doesn't bode well, so we'll have to watch closely to see what the company puts back on its servers."