WNN is reporting:
“JAIF reported that temperatures in the cooling ponds at units 5 and 6 are increasing, but the reason for this is not yet available.”
http://www.world-nuclear-news.org/RS_Possible_damage_at_Fukushima_Daiichi_2_1503111.html
pretty good video Q and A with a physicist. One nugget is that GE had a team ready to go to Japan for expertise but was not requested by Japan’s government nor TEPCO.