Since upgrading to initscripts-5.07-1, my eth0 card was not being turned on
during bootup or during a manual "/etc/rc.d/init.d/network restart".

I traced the problem down to the following part of init.d/network:
---
for i in $interfaces; do
        if egrep -L "ONBOOT=\"?[Nn][Oo]\"?" ifcfg-$i | grep -v "^#"
>/dev/null ; then
                # Probe module to preserve interface ordering
                /sbin/ifconfig $i >/dev/null 2>&1
        else
                action "Bringing up interface $i" ./ifup $i boot
        fi
done
---
the "egrep -L" was doing the opposite of what was intended, and should be
changed to "egrep -l".