Comment 5 for bug 1523161

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Alexey (dsmd90) wrote : Re: BCM43142 802.11b/g/n (rev 01) wifi adapter random freezes. Possibly affects more broadcom devices.

Okay, I've found a workaround, though it is indeed very concerning.
My system was unusable while out of the wire so I've tried downgrading kernels.

After unsuccessful try of the 3.13.0.71 (and all later) I tried another one:

uname -a
Linux dsmdmini-mint 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

And it appear to work with this driver, at least packet loss was 6%, which is acceptable.

But it really concerns me since this kernel has some security issues, which were fixed later.

So, briefly, if anyone has the same problem, downgrading helps a bit, but it's really silly thing to do.