Flash issues with 1.1RC1

I did this: gem install rails --source http://gems.rubyonrails.org
Then I ran my tests, and found that some (but not all) of my flash
tests are failing. It’s always the same test methods that fail,
which reside along-side test methods that have flash tests that don’t
fail. Both get and post requests result in failures, so it’s not one
particular type of request that is the culprit. Also, when
breakpointing, I can send the request, see the response returned with
flash populated correctly, and then get an empty hash from ‘flash’.

Has anybody else experienced something like this?