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