i seriously doubt there's anything sinister to the update process or that it would install something without notification. it's just that when you look at even when you disable the feature through the options menu, you get an update interval of 7days and several "true" values where you wouldn't expect them to remain. i'm being lazy and using the preferential extension(which i'd definetly recommend-if you like web developer you'll appreciate it), but there shouldn't be a discrepancy between it and the .js entries.

hardly a real security threat, i just like to keep outgoing information to a defined and minimal amount, so it's a step in the wrong/symantec direction for me.