Hi  everyone,
 
I have autocad 2010 in my laptop , and when I use the pan botton in my mouse it moves the drawing about an inch an than it disapears and I can't move the drawing till I press the left key and try again.
This problem accur only when I use the middle bottom as a pan , but when I use the pan icon it works fine.
 
By the way I installed the latest update for the mouse driver.
It is the mx518 logitech mouse.
 
What do you think cause this problem?!?
 
Thanks in advance.