From: "Frank Haber" 

I'm amazed, too (at 12-13MBps).  Can you run a perf meter on both ends,
next time you transfer a file?  I'd be interested in how long the CPU pins
(g). (Not that we can differentiate a PCI bus throttle from a CPU clot from
a bridge running out of interrupt time.)

Is there a handle in NT that an app can get at to toggle the driver between
standard and jumbo packets?  Any downside to leaving jumbo enabled all the
time?

When I played with the first Intel-chipset gigabit in 2000, it had problems
negotiating through two switches, and had hissy fits when there was
anything 10-MB-only on the segment.  I wound up having to lock 100,
full-duplex into the NIC (which of course, because of a driver error,
displayed as half-duplex (full-duplex was "never connect")).

--- BBBS/NT v4.01 Flag-5