We have a 100mps ethernet network with two machines running Vista
Ultimate SP1, etc.

For some time, both machine have been experiencing very slow internet
performance even though we have cable at 20mps.

It has been slower than dial up at times.

Called the ISP and they had me jump through some hoops, didn't help.

Did a search on the net and found "The symptoms exist due to the new
re-written TCP stack in Windows Vista that aims to take full advantage
of hardware advances such as gigabit networking (which we don't
have)." ETC.

Employing the command: "netsh interface tcp set global
autotuning=disabled" cured the problem on both machines. Boy, what an
improvement. Everything on the internet was real snappy like it should
be.

BUT, after a few days we were back to crawling along or not moving at
all.

I used the command: "netsh interface tcp show global" and it looked
like all was in order.?

I reissued the original command to "disable" and we were back in
business.

Is there a way to make the desired results permanent?

WLW