So I installed the Stable version instead. Mixed results. Overall, the experience is better. Apps start more quickly and the interface looks more "polished", albeit a bit "dull".
I was able to connect over SMB to my NAS and play movies in DVD resolution as well as 720p, using mplayer. 1080p was a bit too much, but it almost worked too.
I have two new problems though, that I didn't have with the beta version:
I can't find a single browser that works for all sites that I normally visit. My preferred news-site is "omni.se" and either the content is displayed wierdly with big pictures and no "fold-out" functionality on the articles (Chrome does this), or is not displayed at all (Firefox). I also downloaded a bunch of other browsers, but none of the worked with this site, and Chromium didn't work at all! With regards to playing youtube videos, I could get Chrome to do this but only at low res.
My networked printer (a HP Color Laserjet M477 mfp) doen't seem to have drivers for it in this distribution. It does in the beta version and in all other distributions I have tried. Don't know how to solve this problem.
I can live without having the ability to print, but the netbook is almost useless without a fully functional browser. Is there a way to install a more modern version of a browser than those included in the default repo?