According to the archives, other people have had this problem, but I can't
seem to find a resolution to it.
Certain PDF files are not displayed when viewed in KDE's PS/PDF viewer
kghostview, unless reduced (zooming out) to a small size. The same files
are viewable fine using acroread4.
I have a file (35k) to demonstrate if anyone is interested. Configuration
is FreeBSD 4.5-RELEASE, KDE 2.2.2, XFree86 4.1.0, kghostview 0.12.
Looks like this is reported as bug 22771 for an older version (0.11).
Thanks for any pointers, and I'm glad to help in any way if I can.