Thanks for the ping!
There's all sorts of mysterious undercurrents in the March 11 bombing. From what I have read over the last year or so, some of it can be attributed to ineptitude on the part of the police. But there are definitely more sinister things.
For one thing, certain of Spain's police forces and the Intelligence service hated Aznar because he had reorganized them. They clearly wanted him to look bad after the bombing, and in one case even called the press with various details before they even relayed them to Aznar.
Furthermore, I think there was infiltration of the police by Islamists, and there are all sorts of strange connections that keep emerging there. And not only in Madrid - there are connections in Asturias, where the explosives came from. Plus there was the strange event where the girlfriend of one of the men who stole and sold the dynamite drowned herself in the harbor at Gijon while the police (who had been criticized for their prior involvement with the dynamite thief) stood on the boardwalk and watched her thrashing around - for 45 minutes.
ETA was also definitely involved, and one thing that people are not remarking on is that ETA is suddenly getting everything it has always wanted from the Zapatero government, and will probably actually manage to get Pais Vasco given to it. A reward, I assume.
Overall it's a really creepy, involved plot, and nothing would surprise me.
Thanks for the follow-up. I periodically scan the ABC (Madrid) headlines, but I completely missed this story. Maybe I should be following El Mundo and Barcepundit instead...