Aider moi pour mon yum sur fedora core 6

Bonjour à tous
Que la paix et le joie soit votre.
SVP quand j'essaye d'intaller un logiciel avec yum j'ai ceci
[root@localhost messenger]# cd amsn-0.97.tar.bz2
bash: cd: amsn-0.97.tar.bz2: N'est pas un répertoire
[root@localhost messenger]# yum install amsn-0.97.tar.bz2
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
core 100% |=========================| 1.1 kB 00:00
updates 100% |=========================| 1.2 kB 00:00
extras 100% |=========================| 1.1 kB 00:00
Reading repository metadata in from local files
Traceback (most recent call last):
File "/usr/bin/yum", line 29, in ?
yummain.main(sys.argv[1:])
File "/usr/share/yum-cli/yummain.py", line 102, in main
result, resultmsgs = do()
File "/usr/share/yum-cli/cli.py", line 359, in doCommands
return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
File "/usr/share/yum-cli/yumcommands.py", line 134, in doCommand
return base.installPkgs(extcmds)
File "/usr/share/yum-cli/cli.py", line 509, in installPkgs
self.doRepoSetup()
File "/usr/share/yum-cli/cli.py", line 107, in doRepoSetup
self.doSackSetup(thisrepo=thisrepo)
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 334, in doSackSetup
self.pkgSack.excludeArchs(archlist)
File "/usr/lib/python2.4/site-packages/yum/packageSack.py", line 312, in excludeArchs
sack.excludeArchs(archlist)
File "/usr/lib/python2.4/site-packages/yum/sqlitesack.py", line 559, in excludeArchs
cur.execute(querystring)
File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 244, in execute
self.rs = self.con.db.execute(SQL)
_sqlite.OperationalError: disk I/O error
[root@localhost messenger]#

Qu'est ce que cela veut dire svp, je n'arrive pas à installer un seul logiciel sur fedora core 6
Merci d'avance.