Wikidot.com has just experienced about 2-hour downtime due to database issues. The situation has not been critical and no data has been lost. We were able to fix the problem and bring the service back on-line, despite the early-morning Sunday hours.
It is the first downtime of such length for a quite long time. We consider 2 hours to be very long when we think about availability. Usually we try to keep issues from putting Wikidot down and we achieve monthly availability rate of over 99.9%, often reaching 100.0% (as reported by monitoring tools at Pingdom, based on tests on selected number of sites).
I am terribly sorry about the unavailability. This of course gives us hints how to avoid such situations in the future. I also hope that because of the weekend and early morning (UTC) hours the downtime was not that painful, and hopefully not even noticeable for most of our users.