Progress is shown according to bosses KILLED, not attempted.
Major guilds that have transferred
In the summer of 2006, Terenas began suffering severe performance issues. The situation became so bad that many of the server's players and guilds decided to transfer their characters to other servers, at a personal cost of $US25 per character.
Constant attempts to post in the Technical Support Forums resulted in Blizzard forum moderators and Gamemasters locking threads and banning players from the forums.
In early 2007, Blizzard allowed free transfers from Terenas to help alleviate the problem.
Online game news and review website, Gamespot.com, published an article about the lag problems affecting World of Warcraft players in the summer of 2006.
- Vision → Ysera, ~July 28, 2006
where they proceeded to kill the last two bosses of the spider wing of Naxxramas for the first time within two weeks. They also killed c'thun for the first time as a guild just three days after the gates were controversially opened.
- Regicide → Ysera (as Lebowski Urban Achievers), ~August 04, 2006