Japan's payments-clearing network suffered a system problem Tuesday, affecting 11 banks including MUFG Bank and disrupting at least 1.4 million transactions, the network's operator said.Japanese Banks' Payment Clearing Network said it was unclear what went wrong and when the problem would be fixed. It is the first time that bank customers have been impacted by a system problem since the network was launched in 1973.The system problem had not been solved as of Tuesday night, but the network operator expects to process 1 million of the disrupted transactions by the end of Tuesday using backup…READ FULL ARTICLE