Testing the new wifi on/off feature, using the stock or the bleeding edge drivers, I'm unable to connect to my wifi network: the wifi drivers are loaded, the connection dialog pop up, I select the SSID and then after 5 seconds, I'm notified of a connection error.

This was tested after having uninstalled wifi-switcher and rebooted the device. This is completely reproducible

Enabling and disabling wifi connection works perfectly with wifi switcher.

If that can help, the SSID is a hidden WPA2 protected network