I just browsed through it and noticed that there are at least two recent "PK Death" lists which are flawed (i.e. for the two different premium characters). Because i clearly remember i killed each for the two times, but it is not shown on the list. Is it a bug or there probably something i'm missing?

IIRC there is a limit to the number of lines for both the deaths and kills list so it is possible that the your kills just dropped off the list.

I saw there some likewise lists splitted just fine for the multiple other characters. I assume if the death_angel posting is broke, there a lot of pk stats info may be lost.