It seems you can't release a major operating system update these days without a few things going wrong. The latest iOS 7 issue is affecting iPads issued by schools. After updating, the content filters put in place through the Apple Configurator tool are no longer effective, leaving students with unrestricted access to the internet when used at home (school WiFi networks often have separate filters in place that restrict access through all devices). According to an AllThingsD report, a school district in Colorado is collecting iPads at the end of each school day in the meantime -- it's hardly a sustainable long-term solution, but Apple, which acknowledged the issue, expects a fix this month. One crafty administrator set up a DNS block to prevent students from upgrading to iOS 7, but for many other schools, the damage is already done.