title: Can't install libffi-devel
body: <p>I am trying to install libffi-devel on RHEL, but when I try I get this message:</p>
  
  <pre><code>Transaction Check Error:
    package libffi-3.0.5-1.el5.6.z.x86_64 (which is newer than libffi-3.0.5-1.el5.i386) is already installed
  </code></pre>
  
  <p>I am running this command:</p>
  
  <pre><code>sudo yum install -y libffi-devel
  </code></pre>
  
  <p>And here is the full output of the command:</p>
  
  <pre><code>Loaded plugins: downloadonly, rhnplugin, security
  This system is receiving updates from RHN Classic or RHN Satellite.
  Excluding Packages in global exclude list
  Finished
  Excluding Packages from Rackspace - RHEL (v. 5 for 64-bit x86_64) - Common
  Finished
  Excluding Packages from Rackspace - RHEL (v. 5 for 64-bit x86_64) - MySQL 5.1
  Finished
  Excluding Packages from Rackspace - RHEL (v. 5 for 64-bit x86_64) - PHP 5.2
  Finished
  Excluding Packages from Red Hat Enterprise Linux (v. 5 for 64-bit x86_64)
  Finished
  Excluding Packages from Red Hat Network Tools for RHEL Server (v.5 64-bit x86_64)
  Finished
  Setting up Install Process
  Resolving Dependencies
  --&gt; Running transaction check
  ---&gt; Package libffi-devel.x86_64 0:3.0.5-1.el5 set to be updated
  --&gt; Processing Dependency: libffi = 3.0.5-1.el5 for package: libffi-devel
  --&gt; Running transaction check
  ---&gt; Package libffi.i386 0:3.0.5-1.el5 set to be updated
  --&gt; Finished Dependency Resolution
  
  Dependencies Resolved
  
  ================================================================================================================================================================================================================================================================================
   Package                                                               Arch                                                            Version                                                              Repository                                                     Size
  ================================================================================================================================================================================================================================================================================
  Installing:
   libffi-devel                                                          x86_64                                                          3.0.5-1.el5                                                          epel                                                           16 k
  Installing for dependencies:
   libffi                                                                i386                                                            3.0.5-1.el5                                                          epel                                                           21 k
  
  Transaction Summary
  ================================================================================================================================================================================================================================================================================
  Install       2 Package(s)
  Upgrade       0 Package(s)
  
  Total size: 37 k
  Downloading Packages:
  Running rpm_check_debug
  Running Transaction Test
  Finished Transaction Test
  
  
  Transaction Check Error:
    package libffi-3.0.5-1.el5.6.z.x86_64 (which is newer than libffi-3.0.5-1.el5.i386) is already installed
  
  Error Summary
  -------------
  </code></pre>