libxcomposite1 6.8.2-10.3 (amd64 binary) in ubuntu hoary

 libXcomposite provides the client-side interface to the Composite extension,
 which allows off-screen redirection and drawing facilities for clients to
 modify the final look of the desktop.
 .
 This requires server-side support, which was introduced in X.Org's X11R6.8,
 and is also present in most versions of freedesktop.org's 'KDrive' server
 (also known as 'xserver', or 'freedesktop.org X server').