Wired’s Leander Kahney reports that even Microsoft’s corporate campus in Redmond, Washington, is not immune to iPod fever. “To the growing frustration and annoyance of Microsoft’s management, Apple’s iPod is wildly popular among Microsoft’s workers. ‘About 80 percent of Microsoft employees who have a portable music player have an iPod,’ said one source, a high-level manager who asked to remain anonymous. ‘It’s pretty staggering.’ The source estimated 80 percent of Microsoft employees have a music player–that translates to 16,000 iPod users among the 25,000 who work at or near Microsoft’s corporate campus. ‘This irks the management team no end,’ said the source. So popular is the iPod, executives are increasingly sending out memos frowning on its use.”