One of the "features" of Firefox 1.5 is a pop-up dialog that appears whenever a page takes too long to load that reads, "Warning: Unresponsive script. A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete."
To which I ask, "Why, Mozilla? Why?" I run into this error a lot since I upgraded to Firefox 1.5, especially with the slow-as-snails installation of MovableType we wrestle with each day to publish Lifehacker. Happily it's not hard to delay this annoying dialog. To do so: