I have a HP elitebook 8730w (win xp pro SP3) with intel AGN 5300 wireless. At home I have a problem connecting to a wireless network.
When it tries to acquire an adress through DHCP it fails. My router logs an DHCP offer but never recieves an ACK. Giving it a fixed address solves the problem.
I turned on tracing in Windows and in the EAPOL.log i see the following error:
 21:13:26:187: EAPOLQueryGUIDNCSState: Intel(R) WiFi Link 5300 AGN - Packet Scheduler Miniport is in PSK Mode Returning S_OK
 21:13:31:140: ElTimeoutCallbackRoutine entered
 21:13:31:140: WPA exchange not secured within 5 seconds in AUTHENTICATED state
 21:13:31:140: EAPOL Failure: Fail Count = 3
I already updated to the latest drivers without avail.