I have to laugh. On my server there almost looks like there is a waiting line at the NPC. I can just stand near him, any time of the day or night, and watch lots and lots of people pop in and out. At this rate you better get you faction before the task is nerfed. There are so many people doing it, it cannot last long....
O BTW, took me about 15 times to go from dubeous to Alli. Also the XP is pretty good, like 25% AA each time. Its prolly the XP that people are going for now. I'm done with it myself, though, because of its apparent noterity.