Looking at your logs it seems that you are running two antivirus programs at a time. It is strongly recommended that you run only one antivirus program at a time. Having more than one antivirus program active in memory uses additional resources and can result in program conflicts and false virus alerts. If you choose to install more than one antivirus program on your computer, then only one of them should be active in memory at a time. Your system may lock up due to both products attempting to access the same file at the same time.Therefore please go to add/remove in the control panel and remove either Norton or McAfee.  