The Warner Cable app for iPad just got an update, and if you're a jailbreaker, you might want to stay away from it. The app that lets you watch cable TV on your iPad - assuming you are in your home - is now showing an error message to anyone using the app with a jailbroken iPad.
It's actually kinda odd that such an app would have anti-jailbreak measures. My guess is that they want to prevent jailbreak developers from coming up with a way to use the TWC app from outside the house...