Until the release of iOS 5, Apple allowed iDevice owners to block receiving notifications on their own iDevices, but unfortunately the new version of the operating system left us without this option. Recently Apple included it in OS X Mountain Lion and many people hope that Apple will implement it in iOS 5.x or iOS 6. Until then we have a new tweak in Cydia called DoNotDisturb that allows us to block receiving notifications on iDevices by simply pressing a button.
adds a "Do Not Disturb"-Switch to your Notification Center. While the "Do Not Disturb"-Mode is enabled you won't see any Notification Banners or Sounds. The Switch is added within a Notification Center Widget. If the Widget does not appear after installation, go into the Settings App and enable it manually from "Notifications"
After installation, DoNotDisturb adds a widget to the Notifications Center and as soon as you activate the Do Not Disturb option, you will notice that you no longer receive any kind of notification on your terminal. DoNotDisturb is available for free in Cydia, but it only works with iOS 5.
