Kubuntu 10.04, disabled network manager, Solution

A few days ago I installed Kubuntu 10.04 In my notebook, all went to Wonderland for a few days, until yesterday, no apparent reason after reboot we ran out of Wi-Fi connection, looking at classic network connection icon is read message "network manager disabled" I tried to connect via a network cable and there was no case.

From another pc did research and we found a solution that revived knetworkmanager and gave us much desired tipeamos internet connection at a terminal following:

sudo service network-manager stop
cd /var/lib/NetworkManager/
sudo rm NetworkManager.state
sudo service network-manager sta