accleration of file transfers

[Haines Brown]

I'm running debian sarge with tramp/ssh. I notice an odd behavior
about which I'd appreciate some advice.

When files are being uploaded to a server, there is a regular time
spacing between each file, perhaps 2 or 3 seconds. However, if I move
my mouse over the emacs window, the speed suddenly about doubles, and
with the time of file upload being a function of the file size. 

When I'm moving a hundred files, this difference become very
significant. It seems I have to move the mouse pointer back and forth
several times before tramp kicks into high gear. 

Can anyone explain this? It also happened on an older box with sarge,
a serial vs. usb mouse, and perhaps an older version of tramp. 

Is there any configuration that might reliably give the faster upload 
rate? 

-- 
 
       Haines Brown
       KB1GRM