udev-050-1 while starting udev: don't know how to make device "cpu/microcode"

[Alor]

After update udev to udev-050-1 and kernel to kernel-2.6.10-1.1076_FC4 
while booting system
when starting udev warning:
    don't know how to make device "cpu/microcode"
Ignore it o not?

Best regards
Alor Long.