Originally posted by Biro The problem is apparently still out there but not that a big deal.
There is a lot of old stock that is currently being offered at deep discount and it is my impression that the recent reports from new owners is from those early cameras (some with 2013 manufacture dates). The incidence of reported problems dropped off steeply in September of last year (2014) as the permanent fix worked its way through production and into retail inventory. Yes, there is a permanent fix (different components as I understand it) and it has nothing to do with user-installable firmware. The firmware fix (v1.11) merely detects the fault state and aborts the exposure to avoid damage to the camera. The behavior results in a blank frame. This is not good, but better than a runaway mirror.
If a user has firmware above v1.11 and experiences a short flap and/or blank frame, Ricoh will provide warranty service to add a robust fix. For out-of-warranty cameras, the same fix is available, though not for free.
Steve