Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
Indeed it could be hardware, but I would first try with IOS upgrade You are currently on:Cisco Adaptive Security Appliance Software Version 8.2(1)Device Manager Version 6.2(5)I would go with 8.4(6) / 6.4(9) for start and see how that goes.