Hi!
I noticed that this still happens in FC3t2 :
I click on a windows title, move the mouse and what happens is than a selection rectangle is drawn on the desktop, starting a few inches away from the real click position.
See http://www.ussg.iu.edu/hypermail/linux/kernel/0406.0/1207.html for patch and http://lkml.org/lkml/2004/7/8/154 for a smallish discussion.
This issue makes work under X a joke, please fix !
Regards, xerces8