I replaced the older WRT54G with a new WRT GS, and the connection
immediately went to 100Mbps. Linksys had claimed the issue was with the NIC
of the Sony, but they were wrong. Seems as if they should have a firmware
update for their older WRT, but they won't even admit to an issue, so don't
hold your breath. I was happy to find out that my new machine was indeed
intact, and that I did not have to reformat the hard drive to resotre it to
the original software, just to prove to Sony that a service call was in
order. As I said, Sony and Linksys do not talk with each other. Hopefully
this post will save some others the trouble that I had to go through. If
this is so, please leave a response here so perhaps Sony, Intel, and Lynsys
will eventually get the word as well.