update to kernel 2.6.4-1.300 failure

[Edoardo Comar <edoardo supanet com>]

I launched up2date from a console and got this failure

No module ieee1394 found for kernel 2.6.4-1.300, aborting.
mkinitrd failed
                                                                                                                                       

so in my /boot directory the initrd img file is missing

what should I do now ?