I compiled an application that links with the fltk library. It insisted that I also link with
the Xinerama library. When it runs the Xserver takes up about 50% of the available
CPU time. I then compiled my own fltk library, not enabling Xinerama, and linked with
that. This application runs fine, with quite low CPU loading from the X server.
So what is it about using the distribution-supplied fltk and Xinerama that causes such
excessive CPU burning? I've done this on F8 and F9 with the same results.