Hello. 
I think it’s must be a general problem but I didn’t find any info on this on forums.
My Intuos4 stop responding when I work in ZBrush. Just stop and not responding,
to continue working I need to remove my pen from the surface and then it work again.
But it’s impossible to work like this when it’s randomly stop responding and you need
“shake” like this. I thought it was my Intuos (S) problem and just bought new one (M)
size, but the new have exactly the same problem, can some one help me please with
this issue, thanks a lot! 
