Selenium WebDriver Error JavascriptError waiting for evaluate js load failed Firefox 23

Question

Today running my rspec tests, I get the following error whenever somewhere in a test theres a `page.execute_script' call.

 Selenium::WebDriver::Error::JavascriptError:
   waiting for evaluate.js load failed
 # [remote server] file:///tmp/webdriver-profile20130807-3105-fpynb7/extensions/fxdriver@googlecode.com/components/driver_component.js:8360:in `r'
 # [remote server] file:///tmp/webdriver-profile20130807-3105-fpynb7/extensions/fxdriver@googlecode.com/components/driver_component.js:392:in `fxdriver.Timer.prototype.runWhenTrue/g'
 # [remote server] file:///tmp/webdriver-profile20130807-3105-fpynb7/extensions/fxdriver@googlecode.com/components/driver_component.js:386:in `fxdriver.Timer.prototype.setTimeout/<.notify'

There is a file evaluate.js in the /resources directory (instead of components) of the path above, as it is on other machines.

This happened after updating to Firefox 23 from 22. I haven't been able to rollback yet to confirm that returning to 22 indeed fixes the problem, but that's all that's changed I believe.

Has anyone else seen this problem?

Running Kubuntu 12.04, Capybara 1.1.4, selenium-webdriver gem 2.33.0

I tried updating Capybara to 2.whatever and selenium-webdriver to 2.34.0, no change.