>have you tried /FASTDETECT in boot.ini? - this suppresses
>scanning of serial ports during boot.

/fastdetect is in there as well, put there by the Microsoft install. However
the problem is not occurring during boot (well it may as well), but when I
plug in the USB cable after logging in. The enumeration of the USB device
seems to make it appear as a mouse because the data stream contains an "M"
at some point.

>The other method that does work, is to allow the GPS to
>'generate' a new mouse, go into control panel, system,
>device manager, find the offending mouse, and disable it.
>It won't come back again.

OK, the problem is to get to that point because the mouse cursor is leaping
all over the screen in response to the data stream from the GPS. I guess if
I was to let it get enumerated as a mouse, and then disconnect the serial
data line into the FTDI chip, then disable the mouse, it should be OK. Will
look into that later.

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