problem installing turtlebot on ros-groovy

edit

Hi,

I have installed ubuntu 12.04 and ros-groovy and when I try to install turtlebot package I get the following problem:

viki@ROS:~$ sudo apt-get install ros-groovy-turtlebot
[sudo] password for viki: 

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ros-groovy-turtlebot : Depends: ros-groovy-zeroconf-avahi-suite (= 0.2.2-0precise-20131015-2213-+0000) but it is not going to be installed
                        Depends: ros-groovy-navigation (= 1.10.3-s1383961963~precise) but it is not going to be installed
                        Depends: ros-groovy-multimaster-experimental (= 0.2.1-s1381889748~precise) but it is not going to be installed
                        Depends: ros-groovy-xacro (= 1.7.4-s1381889842~precise) but it is not going to be installed
                        Depends: ros-groovy-ros-comm (= 1.9.50-0precise-20131016-0131-+0000) but 1.9.39-0precise-20121230-1434-+0000 is to be installed
                        Depends: ros-groovy-turtlebot-create (= 2.0.1-s1381895136~precise) but it is not going to be installed
                        Depends: ros-groovy-kobuki (= 0.3.9-1precise-20131016-0554-+0000) but it is not going to be installed
                        Depends: ros-groovy-kobuki-description (= 0.3.2-s1381895153~precise) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Please, Can help me someone to resolve this problem? I don't know what should I do. thanks,