Description of problem: While watching a video in VLC I experienced a complete system crash which required powering off my machine. After I started the machine back up, NetworkManager no longer manages the network ( resulting in no network connection ) and .xsession-errors reports: ** (nm-applet:2622): WARNING **: No connections defined ** (nm-applet:2622): WARNING **: No networks found in the configuration database
Looks like GConf got corrupted; can you open the connection editor and see if there are any network connections defined?
I can't remember if I solved this issue through directly editing the connection or not, but it has been solved. Thanks.