This reminds me of adding a section on 'Has it happened before or is this a new thing?', pointing out how to figure out relevant keywords and searching the lists and the tracker, and trying provided solutions if any, before filing tickets of already fixed issues. And mention that people should bump tickets marked as 'Can't Reproduce' or 'Needs More Info', and that if an issue is resolved on some release, and you're running on a different release, that you should open a new ticket instead of bumping an old ticket -- issues may recur, that doesn't mean they are the same despite their symptoms being alike.