"John Navas" <spamfilter0@navasgroup.com> wrote in message news:2oaml2d6rte609f7qol4q8eln6r8hkbjvn@4ax.com...

> A likely cause of your problem is RF interference. (Check your error
> rate.) Perhaps a neighbor is using the same channel and hiding the
> SSID, so you haven't noticed. ;)

Both the Intel software and Netstumbler report the presence of my own
wireless router when it is using SSID hiding so I wonder if the latter is a
possibility. According to NetStumbler all the other devices around here
(one or two of which are on my channel) are coming in at -85 dBm or
worse while mine is around -17 dBM when testing here in my office.
In Intel Advanced Statistics->Statistics signal strength is -18dBm, the
percent transmit errors stat is 0, and nothing else seems to be reflecting
any wireless problems.

FWIW, here is a summary of the Speakeasy download speed test results.
The first is baseline (just through my Comcast cable modem), the next two
include the Wireless Router in the path:

Notebook<-- CM -->Speakeasy (16Mbps)
Notebook<--switched-->WR<-- CM -->Speakeasy (16 Mbps)
Notebook<--wireless-->WR<-- CM -->Speakeasy (7 Mbps)

Next, I used iperf to exercise all paths through the router and eliminated
my cable modem and the Internet from the picture. In these tests I used
my notebook and desktop computers, with both being directly connected
to the specified ports on the router:

Notebook<--wireless-->WR<--uplink-->Desktop (19.6 Mbps)
Notebook<--wireless-->WR<--switched-->Desktop (25 Mbps)
Notebook<--switched-->WR<--uplink-->Desktop (40 Mbps)
Notebook<--switched-->WR<--switched-->Desktop (93.5 Mbps)

Assuming 25Mbps over TCP over a non-accelerated G only wireless
connection is good, I'm inclined to think that my wireless connection is
good and RF interference isn't really a problem. I've played with every
Intel 3945 and WRT54GL setting I could think of and that didn't have
any noticeable impact on performance in any of the above scenarios.
I don't know what is going on, but one thing jumps out and that is the
reduced throughput when traffic is moving through the uplink port.