I just threaded a new screw hole when mine broke. The advantage to this is it costs nothing if you can find someone with the tool to do it or have it yourself, and if it ever breaks again, just get another screw from the hardware store or whever for a cent or two instead being out another $55. The only disadvantage I've noticed is the headphone cup now rotates 360 degrees, which can cause the cable to get twisted up.
I drilled out the joint and Tapped it so that I could stick a machine screw in it. Now it sits on my head perfectly. Can you imagine? D2000's for 40$ shipped + 1 dollar in screws. Hahahaha.
HD580's with 650 pads being sent on monday! To bad my cable didn't come today so I have to wait 2 MORE days to use my MKIII!!!!