I gave Mobian a try yesterday, installed on an SDcard and so far I am very happy with. The landscape/portrait issue is the same as everyone else. Sluggish starting off apps isn't a problem. The software centre does however crash every time I check for updates, installing apps is fine and removing apps is fine (like chromium that appeared in this mornings updates 
installed via the commandline).
I have found that yubikey works fine with firefox.
Thanks for this.
installed via the commandline).I have found that yubikey works fine with firefox.
Thanks for this.