hi when i open network in my system prefs, it says your network settings have been changed by another application. and when i press ok it repeatedly produces this alert. my connection isn't adversely affected. don't know what app it is the only app i have running is firefox. also the bluetooth icon on top of screen has a jagged line through it and says bluetooth not available. any ideas? i'm on a macbook i use firefox, transmission, various music progs, and coffee.