Comment Software Bug (Score 1) 70
My thoughts on this. First, from job listings we know that Sony uses Java in part for it's back end. Second, Java has some relatively highly used objects in it's API which are not thread safe. Third SimpleDateFormat (SDF), which can be used to convert a String into a Date, or vice versa, is one of these not thread safe objects. Fourth, if the application code happens to have two threads using the same SDF at the same time the most common result, that I've seen, is that you get a date either at the very end of 1969 or the very beginning of 1970.
Given the date it seems likely to me, at least, that we've got a basic thread safety issue.