ath cannot find my wireless network any more

Hi all,
hi Sam,

I just build world && kernel from todays sources.
Now my Atheros 5212 pccard cannot find my wireless network any more, but
still sees other networks:

lars_at_pts/3 # ifconfig wlan0 up scan
SSID            BSSID              CHAN RATE   S:N     INT CAPS
Arcor-C6DE58    00:1a:2a:c6:de:56    9   54M -95:-96  100 EPS  RSN WPA WME
WLAN-AFCB47     00:1d:19:af:cb:e0    1   54M -96:-96  100 EPS  WPS RSN WPA WME
0x0000          00:03:c9:54:18:bb    8   54M -94:-96  100 EP   WPA

In contrast to this, the internal wpi chip still finds and connects to the network:
lars_at_pts/3 # ifconfig wlan1 scan
SSID            BSSID              CHAN RATE   S:N     INT CAPS
dd-wrt          00:18:39:c7:6a:dd    6   54M  22:0    100 EP   RSN WME

I also don't know why wpi only finds my own network.

Some additional information:
lars_at_pts/3 # dmesg | egrep 'ath0|wpi0'
ath0: <Atheros 5212> mem 0x88000000-0x8800ffff irq 20 at device 0.0 on cardbus0
ath0: [ITHREAD]
ath0: WARNING: using obsoleted if_watchdog interface
ath0: mac 5.9 phy 4.3 radio 3.6
wpi0: <Intel(R) PRO/Wireless 3945ABG> mem 0xd4000000-0xd4000fff irq 16 at device 0.0 on pci2
wpi0: [ITHREAD]
wpi0: need multicast update callback
wpi0: need multicast update callback
wpi0: need multicast update callback

# ifconfig
wpi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
        ether 00:13:02:3f:0d:e4
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
        status: associated
[...]
wlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:13:02:3f:0d:e4
        inet 192.168.10.135 netmask 0xffffff00 broadcast 192.168.10.255
        media: IEEE 802.11 Wireless Ethernet OFDM/18Mbps mode 11g
        status: associated
        ssid dd-wrt channel 6 (2437 Mhz 11g) bssid 00:18:39:c7:6a:dd
        country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
        TKIP 2:128-bit txpower 0 bmiss 7 scanvalid 60 protmode CTS
        roaming MANUAL
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
        ether 00:0f:b5:9a:47:47
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11a <turbo>
        status: associated
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:0f:b5:9a:47:47
        media: IEEE 802.11 Wireless Ethernet autoselect (autoselect <turbo>)
        status: no carrier
        ssid "" channel 160 (5800 Mhz 11a Turbo)
        country US ecm authmode WPA1+WPA2/802.11i privacy ON deftxkey UNDEF
        txpower 17.5 bmiss 7 mcastrate 6 mgmtrate 6 scanvalid 450 bgscan
        bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 12 wme burst ff
        dturbo roaming MANUAL bintval 0

lars_at_pts/3 # grep wlan /etc/rc.conf
wlans_ath0=wlan0
ifconfig_wlan0="WPA DHCP"
wlans_wpi0=wlan1
ifconfig_wlan1="WPA DHCP"


# cat /etc/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=1

network={
        ssid="dd-wrt"
        psk="secret"
        priority=9
}


lars_at_pts/3 # uname -a
FreeBSD maggie.bsd-geek.de 8.0-CURRENT FreeBSD 8.0-CURRENT #2: Thu Jan 29 18:25:30 CET 2009     lars_at_maggie.bsd-geek.de:/usr/obj/usr/src/sys/USB2  i386