gem_original_require＆＃39;：没有要加载的文件 - 超时（LoadError）

Question

我安装了rubygems。但我在错误之前得到了：

[kalselva@ud-test-002 ~]$ gem --help
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- timeout (LoadError)
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:7
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:7
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /usr/bin/gem:9
[kalselva@ud-test-002 ~]$ 

请在这里帮助我。