[ros-users] ROS-NXT Testing Color Sensor Fails

Hi guys,
I have installed Ros and NXT on my Ubunto 10.10.
Now i want to work with it.
When i test the touch sensor, it works fine.
But if i test the color sensor, it just dosent notice any color.
In attach you find what the shell says.

Gretings
Bunyamin
This is the color sensor test make sure that your color sensor is plugged into port 1:
RED:
BLUE:
GREEN:
WHITE:
OFF:
INTENSITY READING:
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
INTENSITY: 0
COLOR READING:
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0
COLOR: 0