Problem connecting to hidden networks

A laptop running kubuntu was unable to connect to wireless hidden networks after an upgrade. After a search for solutions to overcome this bug I found a simple one here. In the network management go to Manage Connections and in the wireless tab add a connection with the details of your hidden network (use the opportunity to delete all the other or cleanup), apply and close. In a terminal call iwlist as root:

sudo iwlist wlan0 scanning essid BITOQUE

Where in this example BITOQUE was the SSID of the network I wanted to connect to. After that you just click network manager and tell it to use the connection just created.