IE Bug of the day
This screenshot shows the IE 5.5 accessing a Page, that responded with a status code of 400. Instead of displaying the according text from the response, it displays its own "friendly" error message, if the text is shorter than 513 characters. wtf?
This behaviour got fixed in IE 7.Internet Explorer displays "friendly" errors as long as the content returned by the error handler is 512 bytes or fewer in length. The moment you hit 513, life is good again. [src]