>keep it in perpective. At Chernobyl the actual reactor was running at full power during a poorly planned test and exploded. The graphite in the reactor then caught fire . Nothing approaching that is happening in Japan.

Incorrect, the reactor load should have been 75% for the test, it was done at 20% and due to a design flaw in the dampening rod tips, they had become highly radioactive, this caused the reactor to pulse, with insufficient coolant flow causing the failure.