It has not been a good week for Apple and iOS 6. The arrival of iOS 6 brought a new bug wreaking havoc with Microsoft Exchange servers, yesterday we learned of a security vulnerability with the lock screen, and today we find out about apps that are ignoring the system’s “Don’t Allow Changes” setting.

Don’t Allow Changes allows you to lock certain device settings, requiring a PIN to modify them. It can be used by organizations that wish to provide their users with access to iPhones or iPads but maintain a level of control over what those users are able to do with them. One restriction locks the Apple ID used for iTunes and the App Store.

The problem is, while that keeps users from being able to switch Apple IDs in the system settings, they can do so directly from within the App Store. This could then be used to install unauthorized apps.

Apple’s aware of all these issues, and it may release an iOS 6.1.2 update as soon as next week to fix the Exchange and lock screen bugs. For now, it’s not clear if this Don’t Allow Changes behavior will be fixed in that release as well, or if will come at some later date.