Not necessarily directly related to this particular incident, but I would like to know... how many of the inflight computer-related incidents get thoroughly investigated (for example, down to a few, but very precisely situated possible root causes) as opposed to reset-everything and forget that it happened? If I understand correctly, many complex control units are equipped with static memory to store all sorts of logs etc. Are these logs ever examined as part of routine maintenance, or only in case of abnormal operations?