Kinect does not turn on / turns off on its own

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I am trying to follow the tutorials to understand turtlebot. But it seems like every time the kinect is involved, nothing seems to work.

I keep getting

[ INFO] [1323314495.901083262]: [/openni_camera] No devices connected.... waiting for devices to be connected

When I restart everything (restart laptop, redo ssh, launch), sometimes I get lucky and hear turtlebot beep and the kinect turns on (red light can be seen from the kinect laser), but this is what I get:

[ INFO] [1323314659.192741563]: [/openni_camera] Number devices connected: 1
[ INFO] [1323314659.193218090]: [/openni_camera] 1. device on bus 001:11 is a Xbox NUI Camera (2ae) from Microsoft (45e) with serial id 'A00362907481053A'
[ WARN] [1323314659.197118306]: [/openni_camera] device_id is not set! Using first device.
[ INFO] [1323314659.255754180]: [/openni_camera] Opened 'Xbox NUI Camera' on bus 1:11 with serial number 'A00362907481053A'
[ INFO] [1323314659.300121550]: rgb_frame_id = 'kinect_rgb_optical_frame' 
[ INFO] [1323314659.306528300]: depth_frame_id = 'kinect_depth_optical_frame' 
[ WARN] [1323314660.231673257]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.232153416]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.232556400]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.232883467]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.233230857]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.233678749]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.234094444]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.234581657]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.235145905]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.235744794]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.236493772]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.236933702]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ERROR] [1323314660.237591048]: Cannot load nodelet /pointcloud_throttle for one exists with that name already
[ WARN] [1323314660.238391290]: Publisher on '/openni_manager/bond' destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.238664998]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?
[ERROR] [1323314660.239578662]: Cannot load nodelet /kinect_laser_narrow for one exists with that name already
[ WARN] [1323314660.240480382]: Publisher on '/openni_manager/bond' destroyed immediately after creation.  Did you forget to store the handle?
[ WARN] [1323314660.240773506]: WallTimer destroyed immediately after creation.  Did you forget to store the handle?

and then I hear turtlebot beep and the kinect goes off again. I thought it was a battery problem, but the dashboard shows the battery is full.

anyone has any idea what else I can do to even complete the tutorials (I managed to reach teleop with no issues)?