rspec-rails (2.5.0) is Working
for Sijo K George (GNU/Linux, about 1 year ago)

It is working

ruby1.9.2
rvm 1.6.3
rails 3.0.7

rspec-rails (1.2.9) is Working
for John (GNU/Linux, over 2 years ago)

Working out of the box.

rspec-rails (1.1.99.10) is Failing
for Muhiz (GNU/Linux, over 3 years ago)

With test-unit 1.2.3: Spec.run not found, probably because of Rails 2.3?

rspec-rails (1.1.12) is Working
for Maxime Guilbot (Mac OSX, over 3 years ago)

Ok, you need to install test-unit 1.2.3 before.

If you have the: "Anonymous modules have no name to be referenced by" error, try this rspec-rails instead:
http://github.com/maxime/rspec-rails/tree/master

I've submitted a patch to the rspec lighthouse.

rspec-rails (1.1.12) is Failing
for Maxime Guilbot (GNU/Linux, over 3 years ago)

rake spec under a rails app doesn't run the specs.