http://entertainment.msnbc.msn.com/_new ... tests?lite
According to MSNBC, 30,000 of the 40,000 tickets had been sold (so it wasn't sold out yet) and the show will not be receiving the permit it needs.
So she won't be performing.
It is what it is. Western artists have often been banned overseas in some nations. As Indonesia has the world's largest Muslim populace, I can see why there would be such an uproar.
What is simple music to some, may spell deeper troubles for others. And it's not as simple as "don't buy her ticket if you don't want to see her" for everyone. Some people don't want "the trouble" in their backyard either.