The situation in Japan has escalated as the nuclear meltdown situation worsened as the second reactor overheated. This left the Japanese government with no choice but to pump saltwater into the plant, thus putting it out of commission.
Personally, I believe that this was a critical error in japan's decision making, if I were them, I would not want to take the risk of a nuclear meltdown; especially after what happened when the atomic bomb struck Japan many years ago. However, to be fair, the termination of the plant would mean a power cut, loss of investment and not to mention a halt of production. This may have been why the government tried to sustain the nuclear plants for a longer time.
My second point is that nuclear energy, despite being clean and efficient, will eventually lead to the downfall of man. Just think, if a war was to occur, the first projectiles to be launched would not be the nuclear missiles, but would instead be ordinary missiles targeted at nuclear powerplants. Ironically, the countries at war are leaving ticking timebombs of massive destruction in their own countries! I feel that these nuclear plants should not be constructed in the first place to prevent unnecessary loss of human life. To me, the stakes are just too high.