Hi,

it seems that I might find one possible "trigger" of this bug: heavy download.

Today I'm trying to download a big file with wget, and this bug occurs
six times before I could not bear it any more (every time I have to
reboot to recover my network!) and bought a network cable downstairs
in the supermarket and used wired network instead.

It seems that when downloading at full speed (20 Mbps fiber, ~2.3
MiB/s) for several minutes and the bug, very possibly, may occur.

Several days ago, when I tried to download "linux-3.12.tar.xz" from
kernal.org with wget, the bug also occured twice during the whole
download process.

Could this be a hardware issue (flawed hardware?) or just driver
issue? I bought this laptop 8 days ago and wiped the pre-installed
Windows the moment I got it, so I have no idea how this wireless card
performs under Windows.

-- 
wzyboy