Comment 55 for bug 295536

I'd really like to hear more about what this change from P to U implies, from a security perspective, especially given how these very same settings were working fine until Intrepid. For all we know, something changed in the kernel's security model that might have introduced regressions, while our settings would normally work. Can someone more familiar with AppArmor and the kernel features it uses confirm or infirm this guess?