My Wifi connection with Ubuntu 10.10 kept dropping out so I decided to try another Wifi manager and installed WICD? It seemed to work fine so I uninstalled my "Network Manager" to use only the WICD. Big mistake. WICD was working because of the network manager. Now, the WICD won't connect at all no matter how I configure it. I have no Internet access and can't re-install "Network Manager." How do I get "Network Manager" back without a complete re-install of the system?