During his “Power of X” presentation at Macworld Expo today, Apple senior vice president of Worldwide Marketing Phil Schiller announced that Safari, Apple’s new Web browser, has broken the company’s single day download record. Schiller said that since its introduction on Tuesday, Safari has been downloaded 300,000 times. The previous download record for Apple was held by iTunes with 100,000 downloads. He also noted that the public beta of X11 for OS X has been downloaded 25,000 times since its release yesterday.