When running tests with Firefox 3, a modal dialog asking to confirm acceptance of the end user license agreement shows up each time. This, of course, blocks execution of the test. Firefox logs the acceptance of this EULA in the prefs.js file. Since Selenium RC recreates the profile each time it starts the browser, previous responses to accept the EULA are not stored.

The solution to this problem is to add the following two lines to LauncherUtils.java
+ // Disable re-asking for license agreement (Firefox 3)
+ out.println("user_pref('browser.EULA.3.accepted', true);");
+ out.println("user_pref('browser.EULA.override', true);");