The pdftptext binary may be a lower release than the package;
on my system;
# pdftotext -v
pdftotext version 3.00
Copyright 1996-2004 Glyph & Cog, LLC
# rpm -qvilf /usr/bin/pdftotext
Name : poppler-utils Relocations: (not relocatable)
Version : 0.5.4 Vendor: CentOS
Release : 4.4.el5_1 Build Date: Fri 18 Apr 2008 05:45:45 PM BST