Since I am running Ubuntu 10.04 myself on one of my older computers
let me clear some of the dust here...
> Just make sure you (manually) update Chromium. It does not have an automatic
> update mechanism, so security risks can exist if you do not update your
> version every week or so.
Ubuntu includes Chromium in their repositories and they are releasing
regular updates in the same timeframe as Google does for Chrome.
> Also, I hope you know it is much less stable than Google Chrome.
That only holds true if you use the latest bleeding edge builds of
Chromium. Ubuntu includes the exactly same build versions of Chromium
as Google releases with Chrome.
> Or switch to the regular Chrome for Linux, which does auto-update.
You don't need to, see above. Ubuntu keeps Chromium up to date in
their own repository.
> yes, auto update on ubuntu updates it afik ... you just need to set ubuntu to download updates everyday ;)
Ubuntu does this out of the box.