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Hi there!

I encounter the same problems with my kinect and the openni_kinect stack.

When I found this thread i tried roslaunch openni_launch openni.launch, here's what my console says:

core service [/rosout] found
process[camera_nodelet_manager-1]: started with pid [15384]
process[camera/driver-2]: started with pid [15385]
process[camera/rgb/rectify_mono-3]: started with pid [15428]
process[camera/rgb/rectify_color-4]: started with pid [15442]
process[camera/ir/rectify_ir-5]: started with pid [15462]
process[camera/depth/rectify_depth-6]: started with pid [15479]
process[camera/depth/metric_rect-7]: started with pid [15499]
process[camera/depth/metric-8]: started with pid [15516]
process[camera/depth/disparity-9]: started with pid [15536]
process[camera/depth/points-10]: started with pid [15553]
process[camera/register_depth_rgb-11]: started with pid [15573]
process[camera/depth_registered/rectify_depth-12]: started with pid [15587]
process[camera/depth_registered/metric_rect-13]: started with pid [15601]
process[camera/depth_registered/metric-14]: started with pid [15615]
process[camera/depth_registered/disparity-15]: started with pid [15629]
process[camera/points_xyzrgb_depth_rgb-16]: started with pid [15643]
process[camera_base_link-17]: started with pid [15657]
process[camera_base_link1-18]: started with pid [15671]
[ INFO] [1318423547.968519485]: Number devices connected: 1
[ INFO] [1318423547.968680614]: 1. device on bus 001:14 is a Xbox NUI Camera (2ae) from Microsoft (45e) with serial id 'A00364910353049A'
[ INFO] [1318423547.970240665]: Searching for device with index = 1
[ INFO] [1318423548.023895434]: Opened 'Xbox NUI Camera' on bus 1:14 with serial number 'A00364910353049A'
[ INFO] [1318423548.047911128]: rgb_frame_id = '/camera_rgb_optical_frame' 
[ INFO] [1318423548.047960898]: depth_frame_id = '/camera_depth_optical_frame' 
[ INFO] [1318423548.052857231]: using default calibration URL
[ INFO] [1318423548.052945376]: camera calibration URL: file:///home/student/h/hdeeken/.ros/camera_info/rgb_A00364910353049A.yaml
[ERROR] [1318423548.053280770]: Unable to open camera calibration file [/home/student/h/hdeeken/.ros/camera_info/rgb_A00364910353049A.yaml]
[ WARN] [1318423548.053333713]: Camera calibration file /home/student/h/hdeeken/.ros/camera_info/rgb_A00364910353049A.yaml not found.
[ INFO] [1318423548.054645480]: using default calibration URL
[ INFO] [1318423548.054696071]: camera calibration URL: file:///home/student/h/hdeeken/.ros/camera_info/depth_A00364910353049A.yaml
[ERROR] [1318423548.054983437]: Unable to open camera calibration file [/home/student/h/hdeeken/.ros/camera_info/depth_A00364910353049A.yaml]
[ WARN] [1318423548.055043961]: Camera calibration file /home/student/h/hdeeken/.ros/camera_info/depth_A00364910353049A.yaml not found.
[ WARN] [1318423548.056337041]: Using default parameters for RGB camera calibration.
[ WARN] [1318423548.056391186]: Using default parameters for IR camera calibration.
process[camera_base_link2-19]: started with pid [15692]
process[camera_base_link3-20]: started with pid [15809]
[ERROR] [1318423551.048566026]: Tried to advertise a service that is already advertised in this node [/camera/depth_registered/image_rect_raw/compressed/set_parameters]
[ERROR] [1318423551.058408518]: Tried to advertise a service that is already advertised in this node [/camera/depth_registered/image_rect_raw/theora/set_parameters]

So it seems as if the device is recognized and the frames seem to be set up as well - I can adress all topics via rviz - but there are no msgs published via the topics.

Maybe this helps to find what's going wrong! ;)

Greetings, Henning