Lets get it right it doestns have to anything with lag ore something. The names just change, you even dont notice. When BunnyElmer and Goldy were in my server to take screen shots they were waiting until they names changed. By Elmer they changed about in some seconds. But at Goldy it took longer then a few minutes. Also dont forget: The so called 'virus' only changes the names at victim itself. So the others in the server wich dont have the virus dont notice a thing, they just see normal names.