This problem is now solved and in the same action Frank Schummertz overhauled the upgrade's usability - and he merged the .7 upgrade and the .8MS upgrade into one file. So there's only one upgrade.php for all.
Simon Birtwistle together with some guys from the support team wrote a tour module that is supposed to explain the basic functions to first time Postnuke users.
All this is now in the SVN and will be release as RC3 ASAP.
As we are all pretty busy these days, I won't promise it for tomorrow but ASAP. ;-)
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