Depuis la mise à jour en FC 17 impossible de faire fonctionner yum.

[root@fedorax64 ~]# yum update
Plugin "langpacks" can't be imported
Loaded plugins: presto
Traceback (most recent call last):
  File "/bin/yum", line 29, in 
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 321, in user_main
    errcode = main(args)
.....
  File "/usr/lib/python2.7/site-packages/yum/misc.py", line 1188, in cElementTree_iterparse
    return __cached_cElementTree.iterparse(filename)
  File "", line 78, in __init__
RuntimeError: cannot load dispatch table from pyexpat



C'est signe d'un probleme entre les librairies utilisées.

root@fedorax64 ~]# env | grep LD LD_LIBRARY_PATH=/data/oracle/ORA11GR2/lib: [root@fedorax64 ~]# unset LD_LIBRARY_PATH [root@fedorax64 ~]# yum update Loaded plugins: langpacks, presto Resolving Dependencies --> Running transaction check ---> Package apache-commons-io.noarch 1:2.0.1-3.fc16 will be updated ---> Package apache-commons-io.noarch 1:2.1-2.fc17 will be an update
Si ca ne fonctionne pas :
  1. Regarder/etc/ld.so.conf.d/
  2. Vérifier la version de python et python-libs
  3. Prendre les dernieres versions de rpmbone et upgrader (--force --nodeps)