Check your crash log, it will tell you why.

Check your crash log and it will tell you why.

Typical of Ram timing problems. As the ram gets warm it fails. In other words you possibly have a bad stick of ram. Check the crash log, it will tell you why.

It points to a JavaScript file '.js', the file tells the js engine what to do.

It can be of many causes, check the -/Library/Logs and look for the CrashReporter sub-directory. Inside one of these folders will be the crash.log for what keeps quitting. Read it and it should tell...

Use 'ClamXav' it caught 3 viruses last year for me.

Oh yes, you will be locked out of your drive as MAC also uses software that is region coded. You have to do both, the drive and the software.

My advice is 'Don't use Norton' so many hassles. Use 'CamXav' and set it up to scan your Library. It caught 3 viruses last year for me. Well worth the donation. And yes VLC is great!