Mozilla don't ask for username

From: chabral (
Date: 11/11/04

Date: Thu, 11 Nov 2004 13:42:41 -0300

  I use a proxy server to access the web and it requires authentication.
Today, Mozilla stopped asking for the user and password and as a result I
get the proxy error message saying that I need authentication, but Mozilla
don't asks me for them. I can't find anything wrong in the configuration.
Konqueror works Ok but I need to use Mozilla.
Any tip?