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similar issue on our 2960x switch.. system returned to rom by power-on

WE are experiencing similar issue on our 2960x switch as listed in bug id CSCsv39135

 2960x-48FPD-L has stack of 6 switches connected with this switch being the master. it rebooted three times today with a message "system returned to rom by power-on". Only this switch out of 6 rebooted on the whole stack. no crash log to be found on its flash. Power is not an issue as its plugged into same UPS as rest of the other switches. Its now stable for 5hrs. Not sure when next reload will happen. No issue with L2 loop/high cpu/memory leaks. This is the 3rd switch in last three months we had failed. Other two switches were replaced and they have rebooted since the replacement. 

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