Popup trouble in HP-UX

hello all there,,,I installed SD 9 on HP-UX workstations and when I press mouse right button on the screen or on any objet it doesn't work. The arrow moves in the reverse side and nothing else, so I supect it could be a X problem (we use X11 ambient). Do you know if there is any patch that I need to install? I remember some like a list of these, but forgot where I read it. Many thx for any help.