Recently my automated tests started hanging in Firefox. The browser becomes unresponsive. I found an existing issue that states the same problem. My solution for now is to revert to Firefox 22 (download here) (at the time of this writing v25 is out, so I’ll be out of date). I just have to remember not to click the help –> about.
UPDATE: 12/5/2013 I found that it was hanging on new Actions(Browser.driver).Click(element).Release().Build().Perform();
I changed it to new Actions(Browser.driver).MoveToElement(element).ClickAndHold().Release().Build().Perform(); and now it works without hanging on 25.0.1
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