S2U2 (Slide2Unlock2) is a simple lock/unlock application which has the iPhone style slide unlocking. It can be used as a screensaver while you don’t use your device. It has a CallerID function (but some devices may not work, so please try it first); S2P control plugin; and volume control.

Changes:

– added option to determine how often the password is required.
– added an unread icon to show the number of pending system notifications (e.g. alarm, reminder).
– added option to turn off the topmost curtain (above the top curtain) separately.
– fixed the v1.50 issue of starting S2P when Bluetooth headset was connected.
– fixed the v1.50 issue that S2P control might disappear after pressing any control key.
– fixed the v1.50 issue that Pocket Weather was not shown.
– fixed the v1.50 issue of occasionally high CPU usage during idle.
– save more power than the old version when the device is sleeping.
– some graphics changed.
– a few minor bugs fixed.
– included wallpaper files for WQVGA & WVGA devices.

http://forum.xda-developers.com/showthread.php?t=464695