When I open vst's such as kontakt, and load a patch, if a dialog box appears for me to say YES or NO to loading the samples I simple cannot select anything because the dialog box window is in the background. I can see it in my win7 toolbar just beside sonar. Click on its icon on the toolbar and the window opens...try to go there with the mouse cur or and it immediately disappears to the back ground. Hope the image will show you guys the problem.
by the way, this is not a X3b problem> I am dealing with this for a very long time.