The Kozmic Bubble (Unauthorized modification of iPhone OS has been a major source of instability, disruption of services, and other issues)

Link Unauthorized modification of iPhone OS has been a major source of instability, disruption of services, and other issues

Apple Tech Note on some of the side-effects of jailbreaking an iPhone. I love the opening line: “As designed by Apple, the iPhone OS ensures that the iPhone and iPod touch operate reliably”.