Boring details: Ubuntu 10.10, FireFox 4.0, RubyMine 3.1, Cucumber 0.10.0, Capybara 0.4.1.2 - i.e. the latest versions of each (I think).
I have some Cuke tests and am adding more. I remember awhile ago (several weeks) that even though I didn't need Capybara to fire up the browser with Selenium, I wanted to see if it would work. I added a @javascipt tag and lo and behold it worked! At least that's what I think happened. (Maybe I was drinking beer instead of coffee that morning?)
Other than that, I don't know if something's broken or I'm just missing some incredibly simple setting. (Or if I was drunk when I supposedly saw this working weeks ago.)
Also, I just realized that what I saw working awhile ago must have been with FireFox 3.x, not the just-released 4.0. Could that be the problem? I have searched this forum and Googled various phrases and can't find anything.