Network manager failure when booting in IS 12.2

During the boot process I am getting a failure to start the Network Manager. When the failure occurs it says:

‘Failed to start Network Manager e[1;31mFAILEDe[0m]
See ‘systemctl status NetworkManager.service’ for details.
Dependency failed. Aborted start of Network Manager Wait Online e[1;31m ABORTe[0m]’

I am still able to boot into OS. Then I try as root:

‘systemctl status NetworkManager.service’

and I get:

‘NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled)
Active: failed (Result: exit-code) since Sun, 26 May 2013 09:26:18 -0400; 22min ago
Process: 662 ExecStartPre=/usr/bin/test x${NETWORKMANAGER} = xyes (code=exited, status=1/FAILURE)
CGroup: name=systemd:/system/NetworkManager.service’

How can i troubleshoot this problem ?

Sure you haven’t set the networking to “ifup” in Yast?