I installed Ubuntu 13.10 on my laptop lenovo ideapad s405. It's showing all wifi connection.and also connecting to wifi. But it doesn't doing data transfer. Pages are not loading in browser. I have check internet connection its working fine with ethernet connect but not with wifi. Network adpter:Broadcom Corporation BCM4313 802.11bgn Wireless network adapter. Please help.
Had similar issue on one Xubuntu 13.10 box.
this was my solution and it worked (do this when connected with Ethernet of course)
reboot and wireless should be working now.