Hi Pavel,

I fixed the problem and I do now have an adhoc connection. I used the following command to disable the network manager:
sudo service network-manager stop
and after that every thing was fine.

Thank you so much..

Mohammad Jaser Abdelhadi
Communications Engineering-Senior Student
Princess Sumaya University for Technology
Mobile: +962777030924
Email: moh.jaser@yahoo.com \ mo.jaser@gmail.com