Whenever someone equips an item with a Status Symbol accessory added to it, some peooles game in haven freezes.
This can be used in a malicious way. For example, if someone wanted to win an auction cheaply, they could just bid on it when it's on very short, then, for 5 minutes, visit all Haven instances in a loop, equipping and unequipping it, to prevent people from bidding.
//edit: replaced "everyone" with "people" or so, because new evidence shows not everyone is always affected. See next comment. Also removed "Urgent!" frrom title, because nobody seems to abuse it on purpose.
Further accidents have shown, it doesn't crash everyone and can also crash the person who equipped it.
For me, it always happened on town square near the back half of the fountain or in front of auction house, after returning from a mission.
Other players said it happened multiple times to them within an hour.
After it happens, when you log in, the game moves you to where you were.