After an update wifi stops connecting to any network (excluding router at work). It just tries to connect and after that asks for the password again and again.
I tried to reinstall the driver but that doesn't help.
12:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
Ubuntu 12.04.2 LTS \n \l
It's strange because this is a Dell Vostro 1440 which is in certified Ubuntu laptop list.