Also MidlothianGirl that I know of. And if you don't count my one calcified sleeper stone, nothing new is coming out.
I stopped all my prescription drugs in Oct'04, since that can be a reason that you keep making new ones. If you stay with the same eating habits that created the stones in the first place, you will keep getting new stones, the only thing is because of the flushing the liver will be less congested and the bile will flow out better and that helps with the digestion in general.
Some people when they have only a couple of stones left instead of going on maintenance 2x a year, might do it every 1-3 months, or any time that they feel benificial.