Comment 11 for bug 9713

(In reply to comment #10)
> By the way, why did I have to manually install the new kernel, why wasn't it an
> automatic upgrade when using dist-upgrade or upgrade?

Because you installed a pre-release version. Instructions were posted to the
mailing list when the final release went out:

http://www.ubuntulinux.org/wiki/WartyWarthogUpgradeNotes