[K12OSN] System Wide- Mozilla Proxy setting (all.js)

[Wilson Chan]

Just wondering what everyone is doing for editing system wide proxy setting for Firefox? I noticed there are two all.js on V5.0 (64bit). Which one should I edit?
I've use to edit /usr/lib/firefox1.x.x/greprefs/all.js in my other servers but everytime a new firefox version comes out I would have to re-enter the proxy settings. Any pointers in doing this? Thanks!

[root at server log]# locate all.js
/usr/lib/firefox-1.5.0.4/greprefs/all.js
/usr/lib/firefox-1.5.0.4/greprefs/xpinstall.js
/usr/lib64/mozilla-1.7.13/greprefs/all.js
/usr/lib64/mozilla-1.7.13/greprefs/xpinstall.js

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=Here's the settings I modify.=
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pref("network.hosts.nntp_server",           "news.mozilla.org");
pref("permissions.default.image",           1); // 1-Accept, 2-Deny, 3-dontAcceptForeign
pref("network.image.warnAboutImages",       false);
pref("network.proxy.autoconfig_url",        "192.168.2.254");
pref("network.proxy.type",                  1);
pref("network.proxy.ftp",                   "192.168.2.254");
pref("network.proxy.ftp_port",              8080);
pref("network.proxy.gopher",                "192.168.2.254");
pref("network.proxy.gopher_port",           8080);
pref("network.proxy.http",                  "192.168.2.254");
pref("network.proxy.http_port",             8080);
pref("network.proxy.ssl",                   "192.168.2.254");
pref("network.proxy.ssl_port",              8080);
pref("network.proxy.socks",                 "192.168.2.254");
pref("network.proxy.socks_port",            8080);
pref("network.proxy.socks_version",         5);
pref("network.proxy.socks_remote_dns",      false);
pref("network.proxy.no_proxies_on",         "localhost, 127.0.0.1");