Belkin F5D7050 802.11g USB + AP with hidden SSID problem (using ndiswrapper and wpa_supplicant)

I've just got my Belkin F5D7050 802.11g USB device working using
ndiswrapper and wpa_supplicant in Gentoo which I'm very happy about,
but I can only get it working when I switch on Broadcast ESSID on
the AP (Edimax 7207APG). I really would rather be able to switch off
the ESSID broadcast. It works just fine with Windows XP.

I would be very grateful for any help.

Alec

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Here's my wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant
ap_scan=1

network={
ssid="babyvox"
scan_ssid=1
psk="<key>"
key_mgmt=WPA-PSK
proto=WPA
}

I start wpa_supplicant with:

wpa_supplicant -iwlan0 -c/etc/wpa_supplicant.conf -Dndiswrapper -d

and I then get:

Initializing interface 'wlan0' conf '/etc/wpa_supplicant.conf' driver 'ndiswrapper'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
ap_scan=1
Priority group 0
id=0 ssid='babyvox'
Initializing interface (2) 'wlan0'
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
Own MAC address: 00:11:50:18:5e:a4
Setting scan request: 0 sec 100000 usec
Wireless event: cmd=0x8b06 len=8
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
Starting AP scan (specific SSID)
Scan SSID - hexdump_ascii(len=7):
62 61 62 79 76 6f 78 babyvox
ioctl[SIOCSIWSCAN{,EXT}]: No such device
Failed to initiate AP scan.
Setting scan request: 10 sec 0 usec
Scan timeout - try to get results
Received 0 bytes of scan results (0 BSSes)
Scan results: 0
Selecting BSS from priority group 0
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 537 bytes of scan results (2 BSSes)
Scan results: 2
Selecting BSS from priority group 0
0: 00:90:96:c7:8e:13 ssid='' wpa_ie_len=0 rsn_ie_len=0
skip - no WPA/RSN IE
1: 00:50:fc:f3:9d:61 ssid='' wpa_ie_len=26 rsn_ie_len=0
skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec


I want to connect to the one with the SSID mismatch.

I forgot to mention that I can sometimes get it to connect using

iwconfig wlan0 essid babyvox

before starting wpa_supplicant. This very often does not work, though.

Alec