Just a little update...

There was always a possibility that my Macbook Pro's NIC that was at fault, not 
the server's. I tested this two ways today:

1. I directly connected my laptop to a friend's and ran Iperf. Performance was 
great both ways, hitting about 110MB/s.

2. If that was not enough, I booted the latest Ubuntu Live CD on my server and 
repeated the original test. Again, performance was flawless.

These tests tell us that the hardware itself - both my laptop's NIC and the 
server's - are fine. It is a software issue. This was always my suspicion, but 
it's nice to have proof.

Additionally, I had another go with Wireshark. Although the data transfer is on 
the sluggish side, there does not actually appear to be anything strange going 
on within the packet stream.

Anyway, I have gone as far as I can go given my current skill level. I don't 
want to buy yet another server NIC as my current Intel Pro/1000 PT Desktop is 
certified according to the HCL and was indeed working perfectly before I 
upgraded. The latest tests demonstrate the hardware itself is sound. The best I 
can do is hope that the new distributions - whether OpenSolaris 2010.3 or 
Nexenta 3.0 Beta3/Pre1 - are released soon and they magically fix whatever the 
problem was.

- Andrew
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