Hello!
I'm trying to develop an application starting from the ImageTargets demo. While debugging the program I've found that a warning is issued continuously on the DDMS log:

03-23 17:18:38.613: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.621: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.715: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.758: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.824: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.855: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.926: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:38.961: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:39.043: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:39.062: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
03-23 17:18:39.140: WARN/CameraService(2367): setPreviewCallbackFlag (pid 14947)
...

This goes on indefinitely until I quit the program. It's not a bug of my application, it can also be reproduced using the vanilla ImageTargets demo program. The development device I use is a Samsung Galaxy S, with Android 2.2. Should I care for these warning messages?