Public bug reported:

1. find a desktop background which has lots of detail (this is not strictly 
necessary but it helps *a lot* to understand this problem).
2. set this desktop background on both a windows machine and a linux machine
3. decide on two points (call them A and B) near the middle of the screen, a 
couple of centrimeters a part

on each machine, do these steps:
3. move the mouse cursor to point A
4. very fast now; press the left mouse button and move the mouse to point B

on the windows machine you will have a selection ranging from point A all the 
way over to point B
on the linux machine you will have a selection ranging from a point between A 
and B all the way over to point B

clearly, there is some kind of latency issue for the mouse down event on
the linux machine. it takes a few milli (or maybe nano) seconds for the
linux machine to process the mouse down and for this reason the mouse
cursor is moved a little bit before linux receives the mouse down event
and starts the actual selection.

this problem also affects actions such as resizing windows really fast.
as long as you are very slow (e.g for old people) the mouse works just
great in linux.

** Affects: ubuntu
     Importance: Undecided
         Status: New

-- 
mouse sucks in linux
https://bugs.launchpad.net/bugs/144277
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