Before FC2's release, we purposefully changed the default pdf viewer from gpdf to ggv because gpdf was horribly unstable. That is still the case today, with it failing to open many PDF documents, or opening it and soon later locking up completely.
As much as I like Gnome, an application is not automatically the best just because it has a 'G' in it. From my experience, you really can't beat xpdf. You can easily print and search. It renders well and the interface is straighforward, i.e. not confusing like ggv.
-Steve Bergman
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