I'm using a Dell Inspiron 1564. A broadcom BCM 4313. After installing 13.04 every 5 - 10 minutes the whole PC froze. Nothing worked. I uninstalled the proprietary driver through Systemsettings->software and updates->Additional drivers. And used a Wireless N USB Adapter (D-Link DWA-140) and no more freezes. Today i forgot this D-Link for a trip and reinstalled the proprietary Broadcom driver throug Additional drivers and after several hours no freeze!
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