Firefox may give you a "Warning: Unresponsive script" prompt that says "A script on this page may be busy, or it may have stopped responding. You can stop the. the reasons firefox popup this warning: Warning: Unresponsive Script A script on this afcef.org ubuntu/. it wont finish loading and Firefox freezes. The sequence: 1. 2. after 2+ minutes small window appears:"Warning: Unresponsive script. A script on this page may. firefox "Warning: Unresponsive script" dialog fails to wrap text in URL I doubt it only happens in Ubuntu, but since I cannot be sure of that. In order to resolve this issue with Firefox type in its address bar about:support and hit Enter. In the top right corner of the opened page you will. hello, I have continous unresponsive script messages woth Firefox on my older pc (AMD athlon 64 processor + cache kb memory Mozilla Firefox is a fast and convenient web browser with a lot of great features. But, when you open several pages at once, you could be faced.