From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Thu, 21 Oct 2010 09:51:28 -0700
Subject: [ath9k-devel] ath9k HT40 performance issues
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To: ath9k-devel@lists.ath9k.org

On Thu, Oct 21, 2010 at 09:24:52AM -0700, Andreas Hofmann wrote:
> Hello,
> 
> we are currently trying to set up a wireless connection using two
> Atheros AR9280 wireless-cards. Used software is Linux 2.6.35.7 with the
> corresponding ath9k-driver, hostapd and wpa_supplicant in stable
> versions 7.2 and 7.3.
> 
> The problem is, while using the HT40 mode, the achieved data rates are
> by far inferior than expected.

Upgrade:

http://wireless.kernel.org/en/users/Download/stable/

And in about 2-3 weeks we'll have an 2.6.37-rc1

:)

  Luis