Kernel update from RHN not recognized

[sancho]

This is a peculiar problem that I can't find an explanation for in the 
Knowledgebase.

I have been using RHN to update RH9(AS) kernel for quite some time 
without incident. As of Kernel release RH 2.4.21-27.0.1EL (and for 2 
since then to ...0.4EL) the new kernel never has shown up on the GRUB 
boot page list. I found all 3 versions in the /boot directory... but the 
ones available, I can't see...

Only thing I can imagine is that the /boot partition doesn't have enough 
space for them and RPM has dumped them to /boot in the normally 
available space. For the life of me can't remember/find the key to 
checking this out and setting it right.

Any hints?

-Sanch