rails - erro de postgres: Razão: Versão de biblioteca incompatível: libpq.5.dylib requer a versão 1.0.0 ou posterior,

Eu estou preso com a configuração do Ruby (1.9.3), Rails e Postgres (9.0.8) no meu Mac (10.6.8). Toda vez que eu corrorails console Estou tendo o erro a seguir:

/Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/pg-0.13.2/lib/pg.rb:4:in `require': dlopen(/Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/pg-0.13.2/lib/pg_ext.bundle, 9): Library not loaded: @loader_path/../lib/libssl.dylib (LoadError)
  Referenced from: /usr/lib/libpq.5.dylib
  Reason: Incompatible library version: libpq.5.dylib requires version 1.0.0 or later, but libssl.0.9.8.dylib provides version 0.9.8 - /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/pg-0.13.2/lib/pg_ext.bundle  
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/pg-0.13.2/lib/pg.rb:4:in `<top (required)>'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:68:in `require'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:66:in `each'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:66:in `block in require'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:55:in `each'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler/runtime.rb:55:in `require'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/bundler-1.1.4/lib/bundler.rb:119:in `require'
    from /Users/dc/Documents/Aptana Studio 3 Workspace/http/config/application.rb:7:in `<top (required)>'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/railties-3.2.6/lib/rails/commands.rb:39:in `require'
    from /Users/dc/.rvm/gems/ruby-1.9.3-head@global/gems/railties-3.2.6/lib/rails/commands.rb:39:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Eu realmente não sei como consertar isso. Eu já tentei instalar uma versão do Postgres diferente e ainda recebo o mesmo erro.

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