That is the funniest thing I have ever seen happen to an MMORPG.
http://media.putfile.com/HellForge
For anyone who has no clue what that meant....
There is an instance where you get a disease called Corrupted blood that does a ton of dmg to you over time and infects nearby people. Someone managed to get back to town alive with this disease and infect NPC's. Some NPC's have high regen rates so they don't die. So an NPC carries this plague and infects normal everyday people and they die. Great for lowbies coming to a town and just dying, not knowing why.