Recently my Macbook Pro has seemed to develop a problem joining WPA2 networks that I have credentials saved for automatically, both at home and at school. At school it selects the network, but doesn't automatically authenticate, I need to go into the wireless settings and set it to 'connect' with the proper credentials selected in the 802.1x box. At home, it doesn't even select my home network automatically, I need to go and select it myself, but then it authenticates properly. Is there something I can do that will just delete ALL of my wireless configurations and associated content? I'm tempted to just wipe it and format if nothing else.