wpa_supplicant, Atheros AR9285 and FreeBSD 8.0 issue -> wpa_supplicant hangs

Hi!

I am facing very strange issue - for some reason wpa_supplicant hands after
associating connection with AP. It doesn't hang immediately - but after some
time (amout a minute or so).

I tried to run it as

wpa_supplicant -ddd -i wlan1 -c /etc/wpa_supplicant.conf 

and in logs I don't see any errors:

===============================================================================================

....

WPA: RX message 1 of Group Key Handshake from 00:1b:11:01:6b:f6 (ver=2)
State: GROUP_HANDSHAKE -> GROUP_HANDSHAKE
WPA: Group Key - hexdump(len=32): [REMOVED]
WPA: Installing GTK to the driver (keyidx=2 tx=0 len=32).
WPA: RSC - hexdump(len=6): 0e 00 00 00 00 00
wpa_driver_bsd_set_key: alg=TKIP addr=ff:ff:ff:ff:ff:ff key_idx=2 set_tx=0 seq_len=6 key_len=32
WPA: Sending EAPOL-Key 2/2
WPA: TX EAPOL-Key - hexdump(len=99): 01 03 00 5f fe 03 22 00 20 00 00 00 00 00 00 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 91 13 79 11 04 55 fe 1e a3 12 f9 63 96 6b e8 b8 00 00
WPA: Key negotiation completed with 00:1b:11:01:6b:f6 [PTK=CCMP GTK=TKIP]
Cancelling authentication timeout
State: GROUP_HANDSHAKE -> COMPLETED
CTRL-EVENT-CONNECTED - Connection to 00:1b:11:01:6b:f6 completed (auth) [id=0 id_str=]
EAPOL: External notification - portValid=1
EAPOL: External notification - EAP success=1
EAPOL: SUPP_PAE entering state AUTHENTICATING
EAPOL: SUPP_BE entering state SUCCESS
EAP: EAP entering state DISABLED
EAPOL: SUPP_PAE entering state AUTHENTICATED
EAPOL: SUPP_BE entering state IDLE
EAPOL authentication completed successfully
EAPOL: startWhen --> 0
EAPOL: disable timer tick
===============================================================================================

ifconfig looks like below:

===============================================================================================
re0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
	ether 00:26:18:92:e4:16
	media: Ethernet autoselect (10baseT/UTP <half-duplex>)
	status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	options=3<RXCSUM,TXCSUM>
	inet 127.0.0.1 netmask 0xff000000 
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
	ether 00:25:d3:5c:f0:c8
	media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
	status: associated
wlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:25:d3:5c:f0:c8
	inet 192.168.10.3 netmask 0xffffff00 broadcast 192.168.10.255
	media: IEEE 802.11 Wireless Ethernet OFDM/36Mbps mode 11g
	status: associated
	ssid freebsdap channel 10 (2457 MHz 11g) bssid 00:1b:11:01:6b:f6
	regdomain NONE country UA indoor ecm authmode WPA privacy ON
	deftxkey UNDEF TKIP 2:128-bit txpower 30 bmiss 7 scanvalid 450 bgscan
	bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 5 protmode CTS
	wme burst roaming MANUAL
===============================================================================================

uname -a

FreeBSD localhost 8.0-STABLE FreeBSD 8.0-STABLE #34: Mon Mar 22 23:31:30 EET 2010     root_at_localhost:/usr/obj/usr/src/sys/BOFH  i386

atheros driver is loaded as module.

What may be wrong there?

Thank you in advance!

-- 
Eugene N Dzhurinsky