Update:
Spain Says Servers Failed During Shutdown, Apologizes: WSJ Link
Zerohedge had a couple of posts yesterday about some technical glitches in the Spanish equity market and Tokyo's stock exchange that caused those markets to shut down for a bit.
http://www.zerohedge.com/news/another-market-breaks-tokyo-stock-exchange-halts-derivative-trades
http://www.zerohedge.com/news/spains-stock-exchange-has-been-halted-over-4-hours-due-technical-glitch