真不知道dreamhost公司的服务器咋整的，成天维护，调整 ，迁移，下线。今天半数站点遭遇503错误 "Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later." 上了http://dreamhoststatus.com/ 看一看，原来是 第3回合的…