Network Device is unmanaged problem in fedora core 10 (fc10)

If you have been tinkering with your network manager in your fedora core 10, you might have encountered this unmanaged network device problem.. (just like what happened to my box...)

Solution:

- login as root
- set to yes in /etc/sysconfig/network-scripts/ifcfg-eth0
NM_CONTROLLED=YES

then under System -> Preferences (in GUI-- gnome), a new connection will appear (automatically, after setting NM_CONTROLLED=YES)

then under System -> Administration, Devices, double click on eth0
then in the new window the appear, check controlled by network manager and activate device when computer starts,
and also automatic obtain DNS.

that's it...