kmod update with yum

hi,
i need some help:-(
i now spend many hours to find the reason why yum always install kmod
rpms on centos and never update. currently there is not any weak-updates
kmod rpm in centos which has more version-release, but as you try to
update any kmod the same problem will arise. in case of fedora where
kmod's are hardwired to a given kernel it's not a problem (but those are
never weak-update kmods), but in case of centos where eg in 5.3 all
kernel a kabi compatible then we can use none kernel version specific
kmods. what's more in case of weak-updates kmod when the same package
has more version installed cause many problems.
suppose i've got a kmod installed eg:
# rpm -q kmod-fuse
kmod-fuse-2.7.4-20.el5
now i build a new one and try to update with yum update. it's always
install it and i can't force yum to update it. anybody can tell me the
reason? of course rpm -U update it.

imho it's the same reason as the recent dbrd kmod thread where wasn't
any solution.

anyway anybody know what is the yum-kmod and what is it good for? and
try both with/without yum-kmod but the same happened:-(

-- 
  Levente                               "Si vis pacem para bellum!"