WLAN interface does not associate with access point on boot

[Sebastian Kaps]

I recently updated to from 8.10 to 9.04 beta which went pretty flawless.
The only thing is: when I boot the system, my WLAN card does not automatically connect to my access point.
The interface goes up and wpa_supplicant runs but no connection to the access point is made.
"wpa_cli status" shows this:

Selected interface 'wlan0'
wpa_state=INACTIVE
ip_address=192.168.1.2

I'm not sure if this is a bug in wireless-tools or in wpasupplicant.
wireless-tools is version 29-1.1ubuntu2, wpasupplicant is version 0.6.6-2.

When I run "/etc/init.d/networking restart" then, the connection to the access point is established.

The wlan0 stanza in my interfaces file looks like this;
auto wlan0
iface wlan0 inet static
        address 192.168.1.2
        network 192.168.1.0
        netmask 255.255.255.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        wireless-mode Managed
        wireless-essid WLAN
        wireless-rate auto
        wireless-txpower 20dBm
        wpa-driver wext
        wpa-ssid WLAN
        wpa-psk 12345
        up echo 1 > /proc/sys/net/ipv4/ip_forward