rails install via gems fails on fedora core 4

Hi all,

I'm trying to install rails on fedora core 4 via rubygems. Ruby is
installed as are rubygems, however when issuing the coomand:

gem install rails --include-dependencies, I get this error:

[root@h96433 ruby]# gem install rails --include-dependencies
Bulk updating Gem source index for: http://gems.rubyforge.org
/usr/lib/ruby/1.8/yaml.rb:133: [BUG] Segmentation fault
ruby 1.8.4 (2005-12-24) [i386-linux]

Any one have an idea what's going on? If not, can someone shed some
light on installing rails without gems on Linux..