Jeff Liebermann <jeffl@comix.santa-cruz.ca.us> hath wroth:
(...)

Another possibility is that the wireless router has MAC address
filtering setup. Your wireless client's MAC address is not in its
configuration file. The symptom is exactly as you described. You get
a strong signal, an initial connection, but no DHCP assigned (or
static assigned) IP address.

--
Jeff Liebermann jeffl@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558