Hello, sorry I am late to this discussion but I wanted to report that I
also see the same issues being reported here. I have been trying to find
the cause for many weeks and was delighted to stumble upon this thread.
This problem has been driving me nuts.

I see the same frequent disconnects every couple of minutes, it
evidences itself as 2 second pauses when playing AAC audio from my Boxee
system. In Wireshark I see TCP Retransmission events every time this
happens and in the messages file I see the same rt_ioctl_giwscan
messages when it happens.

Strangely, on my Linux box I am able to copy a 3Gb file from my Windows
share (smb) using the same wireless connection. It seems as though the
problems may be related to the size of the packets.

My system is dual booted, Jaunty 32bit and Karmic 32 bit, I see the problems 
with both OS's.
I am using a Linksys WUSB600n V2 USB adapter, it has the ralink rt3572 chipset. 
I have installed the latest rt3572 drivers from the Ralink website (I ran 'make 
install', etc, i.e. I am not using ndiswrapper)

I followed the instructions in the following launchpad thread to install
and set up the rt3572 driver:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/408165

In case anyone is interested, at the above thread I posted my Wireshark
results where you can see the TCP Retransmission events occurring.

I am pretty sure this is not a problem with the WUSB600N itself as if I
move it to a Windows XP machine and stream the same AAC files it works
flawlessly, Obviously the buffering may be different with the Windows
app so that may be a factor, although I am using the same Boxee Beta
version. Note also that I see the same issues if I use other media
players on my Linux box - it is not a Boxee issue in my opinion.

Also I wanted to mention that my setup has the WUSB600N V2 in the same
room as my Dlink DIR-825 router, just 10ft apart. The signal strength is
100%. network-manager shows that it is connected at 270Mbps. I am using
5Ghz band, WPA2

If anyone needs me to provide more detail please ask. If there is any
way I can help, again please ask. For me, Linux and Wireless just
doesn't play well together. This is the show stopper for me at the
moment,

thanks

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rt_ioctl_giwscan log spam removal or fix
https://bugs.launchpad.net/bugs/356807
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