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Running fresh install of 12.04lts on lenovo b570e with bcm 4314.

Wireless wouldn't connect at all at first, then a looked online for drivers and managed to get it working, it worked ok for a few hours and now it disconnects and keeps trying to reconnect but never does.

rfkill list all:

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

here's lsmod output: http://pastebin.com/Z7X9RHH2 bcm drivers installed: http://i.imgflash.com/Tuc.png

Can anyone see what's going wrong?

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Are you using a fully updated Ubuntu 12.04 LTS (with whatever drivers are provided), OR did you load a proprietary driver (using Additional Drivers) ? –  david6 Mar 10 '13 at 8:38

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