some time in 2004 i believe- whether or not he is still sober to this day is not known by me- they are planning another ozzfest so he just may still be sober.
i know that he has juggled sobriety with bouts of relapses since he has been married to sharon- the one person that has possibly helped preserve his life.
regardless of his sobriety - he has done extreme damage to himself because of his drug and alcohol addiction and needs to read a teleprompter onstage so he can sing his songs.
You mean to tell me he's stopped? O.o lol. He stopped doing HARD substance probably at least 15 or so years ago. And he doesn't drink as much anymore, because it's causing quite embarrassing health problems...