well i've read on here about it happening, and i've always been pretty anal about my sproket bolts, and my aftermarket sprocket has been on for over a year, with locktite and bolts were checked 3 weeks ago when i put on a new tire, none were loose and i didn't put any torque on them as i didn't want to break my loctite loose. i was riding sat and after a few rides out, hub came apart after landing off of a jump, let me tell you it wasnt pretty as the wheel locked up and i went over the bars into the face of the next double. so now the hub is at my local dealer to see if and what yamaha will do. the holes don't look wallowed out at all to me, the parts guy said that they stock the hubs, then i told him that if they weren't gonna take care of it i didn't want another yamaha hub, to which he replied well they arent having any problems with the new hubs. if they are having probs with the 06's why isnt there any notices on these? i post what they decide to do. and maybe get some picks up here if they don't take care of it. it sure made short work of my ironman sprocket,bent it like a pretzel.