Trouble with Ruby Install

Hi

I recently installed Ruby on my new iMac running Leopard and am
getting the following error when trying to run irb:

dyld: NSLinkModule() error
dyld: Symbol not found: _rl_filename_completion_function
Referenced from: /usr/local/lib/ruby/1.8/i686-darwin8.8.4/
readline.bundle
Expected in: flat namespace

I found postings that suggested I re-download the source code, then go
to the ext/readline dir and do the following:

ruby extconf.rb
make
sudo make install

This did not help - I'm getting the same error.

Can anyone help?

Thanks!

What were your install steps?