Where can I find the changelogs to the "ubuntuXY" updates of KDE?

[Michel D'HOOGE]

> aptitude changelog <package>
>
> shows the changelog for the package.  I'm pretty sure there are other ways.

I use 'C' within aptitude that also display the changelog. But I
noticed that the result is not always accurate. For instance, for a
lot of KDE related packages I get the same response (changelog of
kdebase IIRC); but if I ask the changelog for (e.g.) openoffice, it is
a different one and more accurate. Does this mean that when I download
100MB of (say) KDE upgrades, it is only for a couple of changelog
lines in a single package?
--
Michel