FYI - I am in Barcelona Spain and I just overheard the front desk of my hotel say that the taxis are on strike (not sure if this started today or not - 6/11/2014 or not).
The taxi strike is supposedly in support of issues with fellow taxi drivers in London. Found info that it is a 24 strike that started at 6 am this morning.
It is supposed to be only 1 day from what I can find so far. Also striking today in Madrid according to info. news link for Madrid. https://es.finance.yahoo.com/noticias/taxistas-madrid-cifran-100-seguimiento-huelga-074233268.html
Metros are running. Busses seem to be. Link where to find bus map to download: http://www.tmb.cat/en/el-teu-transport#
PS - I found out the hard way this morning.