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 support to PocketWeather v2.1 (thanks Adrian).
– fixed the volume keys not functional during a phone call if S2U2’s Volume Control is enable.
– fixed the occasional problem that the system alarm did not work.
– fixed the occasional problem that the system CallerID would not be shown even S2U2’s CallerID is disable.
– a few minor bugs fixed.

http://forum.xda-developers.com/showthread.php?t=412418