Network Interface Down Upon Restart

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I am currently using Fedora 15 to set up a beowulf cluster using LAM. I have it installed on a computer using the base system option within the installer. I have set a static IP for it, but upon reboot/reconnection of the cable, the IP address disappears and the the interface is down and must be brought up by ifconfig. I have tried setting the address by both ifconfig and ip addr, both with the same result. I have also used chkconfig to ensure that the network service is active at level 3 and have tried disabling NetworkManager.service. I would assume that running updates would clear this bug, if it is one, but I currently do not have the enough wireless data as of current. If this is a bug fixed by updates, recommendations on package updates would be welcomed.

Nate