This is my first post, so hello. I've got a strange problem with my machine. Sometimes, not always--perhaps one in three times attempted, my machine will activate with my Symantec security DISABLED. Shut it off and start again, and it is ENABLED. My first thoughts were to malware, but I've scanned it sixteen ways from sideways and I cannot find any intruders. Any thoughts on this folks? Why does it not fire everytime?