From The Australian:
THE tiny hobbit-like humans of Indonesia may have lived in Australia before they became extinct about 11,000 years ago.
The startling claim comes from archaeologist Mike Morwood, leader of the team that in 2003 uncovered remains of the 1m-tall hominid at Liang Bua cave on Indonesia's Flores island.
"This is seriously being discussed now by the archaeological community in Australia as a result of our work in Indonesia," Professor Morwood said.
He suggested that further field work at sites in Indonesia and northern Australia could provide answers.
I can think of one answer... (via Gene Expression).