Ive had this problem with my business class linksys router at the house. All of my Windows and other devices are not having problems connecting.
I would find that the router showed a valid ip address assigned to the mac address of the MacBooks wireless card. If I went to the router and forced it to kick the mac address off, then the mac could then successfully connect and pull an ip address. I'm using wpa-psk.
Ive had this problem with my business class linksys router at the house. All of my Windows and other devices are not having problems connecting.
I would find that the router showed a valid ip address assigned to the mac address of the MacBooks wireless card. If I went to the router and forced it to kick the mac address off, then the mac could then successfully connect and pull an ip address. I'm using wpa-psk.