I'm running Kubuntu 13.04 Alpha 2 (with all updates applied) on a Dell Latitude which has a Broadcom BCM4313 Wireless LAN controller. I am able to connect to unsecured WiFi connections with no problem, but not to my Belkin wireless router which is configured for WPA/WPA2 Personal wireless security. However, just before I installed 13.04, I was running 12.10 and was able to connect to this same network with no problem, using the same key, which has not been changed. I am wondering whether anyone else has run into a problem like this.