cannot "apply changes" to restart Apache post-setup of proxy

Failed to apply changes :
[Fri Nov 18 05:06:50 2005] [notice] suEXEC mechanism enabled (wrapper: /usr/local/sbin/suexec)
[Fri Nov 18 05:06:52 2005] [notice] FastCGI: wrapper mechanism enabled (wrapper: /usr/local/sbin/suexec)
[Fri Nov 18 05:06:52 2005] [notice] FastCGI: process manager initialized (pid 77504)
[Fri Nov 18 05:06:52 2005] [notice] Digest: generating secret for digest authentication ...
[Fri Nov 18 05:06:52 2005] [notice] Digest: done

proxy.pac file for Firefox / Mozilla / et. al.

Quite useful for mobile users who work at different locations and require different proxy server settings for each location, just point your Automatic Proxy Configuration URL to your local proxy.pac file and it automatically pics up if it should use a proxy server or not.

function FindProxyForURL(url, host)
{
   if (isPlainHostName(host) ||
       dnsDomainIs(host, ".foobar"))
       return "DIRECT";
    else
        if (isInNet(myIpAddress(), "192.168.99.0", "255.255.0.0"))
            return "PROXY 192.168.99.2:3128; DIRECT";
        else
            return "DIRECT";
}

Lighttpd proxy with Tracd specific example

$HTTP["host"] == "trac.textdrive.com" #the == is to exactly match
{
proxy.server = (
"" => (                               #this is for the root, can be a .extension in other uses
"trac" => (                           #just a name, your choice
"host" => "70.84.29.150", 
"port" => 9000 
           )
       )
                )
}