@ʞɹɐzǝɹ Nyaa has been down for days, as well as the stuff they were hosting e.g. commie, underwater, HS. Seems to be a DDoS from Japan, quite possibly connected to the recent anti-piracy initiatives. Some other sites have gone up and down repeatedly during that time, e.g. TT. Seemingly unrelated, but MAL was hacked and approximately 3000 anime series had their titles and descriptions changed.
If you mean anything specific to this site though, not really
I flagged two comments as obsolete yesterday because they referred to older versions of the post, and because the issues that had been pointed out were already fixed:
This, where someone asks for a source which was later added, although looking back on it, I imagine that the comment might still...