A problem has just been brought to my attention that occurs with the new release of DNN 4.0.1
If you are using the core project blog module, the new upgrade will break the module.
The new upgrade will affect most modules that dynamically change the
page title. You can read further information regarding this here:
http://www.dotnetnuke.com/tabid/795/mid/2108/threadid/10254/scope/posts/Default.aspx
As with all upgrades, I would strongly advise that you test the upgrade
on a localhost install before applying it to a live website to ensure
that all of your modules still work correctly.
I don't know if this same problem occurs in the 3.2.1 release, so
again, make sure you test this upgrade on a localhost install before
applying the upgrade to a live website.