Among other things, I develop software in my spare time. These days it’s Mac and iOS stuff. I have had the beta of iOS 5.1 on my iPhone 4 for a while now and I neglected to put the release version of 5.1 on last week. So tonight the beta expired and bricked my phone until I manually installed the release version.
As we said in elementary school – “Smooth move, Ex-Lax!”