Macbook Pro 15" is shutting down of security purposes
What could be wrong when my Macbook Pro 15" is shutting down of security purposes a couple times a day? Got Norton so no virus, and they ran a check at the local computer store. No viruses and nothing is suppose to be wrong after the check... Tried google it, no luck finding similar cases. it is a little over 2 years old now.
MacBook Pro, OS X Mavericks (10.9.2)