Can you link this percieved slowdown to any particular change(s)? The
basic structure of the sio driver hasn't changed "recently".
Well, I haven't updated this machine since 2.1.0-R. And the old driver WAS
much faster. As for what caused this: Would have to profile the code. (By
the time I could do that, I could probably learn to write a "super sio"
that was x86-specific.)