Interesting development when playing the latest version of Lycanites Mobs tonight. I headed into the Nether, when suddenly a mob event started playing! I had my internal clock set to December 17th, so it was Satan Claws. But I had already been attacked by Geonaches when mining ore, so I just thought "okay, I guess that these things happen in the Nether now".
But then when I left the Nether, the event started again! And soon after the chat said that it was no longer spawning mobs. Cool. Fun times.
Except later when I go back into the Nether, there are Satan Claws EVERYWHERE! As I'm walking along, I see the framerate start to stutter. It's like they're still spawning all around me. And then I realize that the chat never said that it stopped spawning them in the Nether, only the overworld! So I warped back to the portal to get back to the overworld and am inundated with more Satan Claws than I can count!
So anyways, I figure that wasn't supposed to be happening, so I'd better report it.
That second picture is nightmare fuel damn.