A few nights ago I was disconnected 2 minutes before Cassies window ended (the instance had been trying to spawn her for several hours), and couldn't log back in because the login system was down. It was at like 3 AM so I called it a night, I was just dancing in Cassies Arena anyways.

Next day, I logged in and mysteriously found myself down leveled from 35 to 34. I found someone who was in the instance with me that night, and they confirmed, because I was in Cassies Arena when I disconnected, it spawned on me as I was disconnecting and killed me.

That one nearly broke me.