yum does not see kernel update

[François Patte]

Bonjour,

I run yum update on my system and it found only one package to update...
When I look at a fedora repository, I can see, for instance, that there
is a new release of the kernel (kernel-smp-2.6.14-1.1653_FC4.x86_64.rpm
 and I run v. 1644 of this kernel).

Why? (Every "basic" repository is enabled: updates-released,...).

Thank you.

-- 
François Patte
UFR de mathématiques et informatique
Université René Descartes
http://www.math-info.univ-paris5.fr/~patte