When your service over a period of several days is unavailable (or at least very flacky) for a number of users, it would really be appreciated if you would at least give some kind of acknowledgement of the problem, and a time frame for when you would expect the problem to be fixed.
A Twitter account that has last been updated July of last year and a wiki Status page that states “Service information available“, with latest updates from March last year is not good enough.
I enjoy my Ubuntu One file storage, but when a problem is happening for four days, without any information given to the users, I start looking around for alternatives. We all know they are out there…
(Yes, I did file a bug report…)