Agreed that if you're going to use xpdf, use the version included with
Red Hat Linux.
BUT, it should be pointed out that xpdf support many of the features that acroread does. For example, complicated PDFs include hyperlinked table of contents, links that open other PDFs, include outside files, etc. None of this works right in xpdf. Also, xpdf has much poorer image quality than acroread in my experience. So, there are lots of good reasons to use Adobe's Acrobat Reader.
--Jeremy
I'd add "speed" to the reasons. Also, if you turn on cooltype (Edit/Preferences/General) if you're on an LCD you'll find that documents are very readable. Also you might want to turn on line-art smoothing -- it probably uses more CPU time, but I don't have any CPUs slow enough (apart from the mail server*) for it to make any difference.
jch
* a P133 with 80M, runs the family name server/dns/dhcp/web just fine, but hopeless for anything graphical or interactive.
