Just saw this linked at Ticker Forum, they have a very interesting thread going with much info.
http://www.reuters.com/article/2011/03/12/japan-quake-nuclear-cooling-idUSLHE7EB02D20110312
Japan Fukushima nuclear plant faces new reactor problem
TOKYO, March 13 | Sat Mar 12, 2011 4:15pm EST
TOKYO, March 13 (Reuters) - A quake-hit Japanese nuclear plant reeling from an explosion at one of its reactors has also lost its emergency cooling system at another reactor, Japan’s nuclear power safety agency said on Sunday.
Here’s the TF thread link:
http://tickerforum.org/akcs-www?post=182060&page=69