latest kernel for x86?

Hi!

Am a little confused about the latest kernel. Judging by the time I'd say 
that kernel-2.4.21-27.TL.athlon.rpm is the latest but grub has 
kernel-2.4.21-27.0.1.TL.athlon.rpm as the latest.

Which one is really the latest?

Thanks!
Remco

-rw-rw-r--    1 500      500      14028916 Dec 24 14:44 
kernel-2.4.21-27.0.1.TL.athlon.rpm
-rw-rw-r--    1 500      500      13949173 Dec 24 14:44 
kernel-2.4.21-27.0.1.TL.i586.rpm
-rw-rw-r--    1 500      500      14208382 Dec 24 14:44 
kernel-2.4.21-27.0.1.TL.i686.rpm
-rw-rw-r--    1 500      500      14026698 Dec 21 15:41 
kernel-2.4.21-27.TL.athlon.rpm
-rw-rw-r--    1 500      500      13949691 Dec 21 15:41 
kernel-2.4.21-27.TL.i586.rpm
-rw-rw-r--    1 500      500      14207199 Dec 21 15:41 
kernel-2.4.21-27.TL.i686.rpm