Click on your user ID on this comment. Is the "showdead" pulldown set to "yes"? If it's not set to "yes" HN doesn't show you any "[dead]" submissions.

I recommend setting "showdead" to "yes". You see the damndest things.

It is, otherwise I wouldn't have been able to write about dead submissions.

It's flagged but not dead submissions that I can't find.