sudo yum install php php-mysql Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Traceback (most recent call last): File "/usr/bin/yum", line 29, in <module> yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 276, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 129, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 434, in doCommands self._getTs(needTsRemove) File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 99, in _getTs self._getTsInfo(remove_only) File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 110, in _getTsInfo pkgSack = self.pkgSack File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 883, in <lambda> pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 668, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.6/site-packages/yum/repos.py", line 265, in populateSack self.doSetup() File "/usr/lib/python2.6/site-packages/yum/repos.py", line 92, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 184, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 202, in postreposetup_hook all_urls = FastestMirror(all_urls).get_mirrorlist() File "/usr/lib/yum-plugins/fastestmirror.py", line 369, in get_mirrorlist self._poll_mirrors() File "/usr/lib/yum-plugins/fastestmirror.py", line 413, in _poll_mirrors pollThread.start() File "/usr/lib/python2.6/threading.py", line 474, in start _start_new_thread(self.__bootstrap, ()) thread.error: can't start new thread i getting this error frequently i dont know because am a bigginer please help me