From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.3+) Gecko/20010831 BuildID: 20001090308 If proxy server is down or misconfigured error messages when trying to connect are wrong. Reproducible: Always Steps to Reproduce: 1. Put "HTTP Proxy=localhost". (I asume you dont have a proxy in your machine) 2. Navigate to any location (e.g. www.mozilla.org) Actual Results: Error Message: "The connection was refused when attempting to contact www.mozilla.org" Expected Results: Error Message: "The connection was refused when attempting to contact the proxy server" or Error Message: "The connection was refused when attempting to contact localhost" Another case Steps to Reproduce: 1. Put "HTTP Proxy=anyinvalidhostname". 2. Navigate to any location (e.g. www.mozilla.org) Actual Results: Error Message: "www.mozilla.org could not be found. Pelase check the name an try again." Expected Results: Error Message: "anyinvalidhostname could not be found. Pelase check the Proxy settings and try again." I think these error messages are confusing and make difficult to find out that the problem is in the proxy and not in the URL

*** This bug has been marked as a duplicate of 56629 ***

Verified. Sorry I did not find the dup.