[CentOS] system "stuck" with 2.6.18-128 kernel. how to move to 2.6.18-194.17?

/snip

>just noticed it still has the old 2.6.18-128 kernel instead of the new
>2.6.18-194.17.  What gives?
>
>/etc/grub.conf points at 2.6.18-194.17, but when I reboot, 2.6.18-128 comes up.
>
>Any suggestions?

/snip

>        kernel /vmlinuz-2.6.18-194.17.1.el5 ro root=/dev/md1

Yup, looking at your root, I am guessing your system isn't booting of the
/boot you think it is.