A fascinating article and summarised as:
Austrian authorities have detained an alleged Islamist extremist from Berlin as he was traveling back from Afghanistan, where he had undergone terror training. The 26-year-old had boasted about attacking "infidels," but it is unclear whether he was embarking on a terror plot or simply heading home after becoming disillusioned with his cause.
Link:http://www.spiegel.de/international/...769405,00.html

Curious the potential / actual role of Austria, a small country at the "crossroads of Europe" and IIRC with little experience of terrorist attacks for a long time (OPEC ministers seized way back in the 1970's).