Lead Firefox developer exits Mozilla

Mike Beltzner – the man who oversees development of Mozilla’s Firefox browser – will leave the organization after the release of Firefox 4, the latest version of the browser due for official release later this quarter. Beltzner joined Mozilla six years ago from IBM Canada and worked on six major Firefox upgrades, beginning with Firefox 1.5. "I’ve been getting antsy for the past few months, as some people may have noticed," Beltzner wrote on his personal blog, "and have decided that it’s time to challenge myself by jumping into an industry about which I know next to nothing."