Firefox での web ブラウズを高速化できる(?)方法

user_pref("dom.popup_maximum", 4);
user_pref("font.default", "sans-serif");
user_pref("font.language.group", "ja");
user_pref("font.minimum-size.ja", 12);
user_pref("font.size.fixed.ja", 17);
user_pref("font.size.variable.ja", 17);
user_pref("font.minimum-size.x-central-euro", 12);
user_pref("font.size.fixed.x-central-euro", 17);
user_pref("font.size.variable.x-central-euro", 17);
user_pref("font.minimum-size.x-western", 12);
user_pref("font.size.fixed.x-western", 17);
user_pref("font.size.variable.x-western", 17);
user_pref("intl.charset.default", "Shift_JIS");
user_pref("intl.charset.detector", "ja_parallel_state_machine");
user_pref("intl.charsetmenu.browser.cache", "windows-1252, EUC-JP, ISO-2022-JP, Shift_JIS, UTF-8");
user_pref("browser.display.screen_resolution", 125);
user_pref("browser.display.background_color", "#F0F0F0");

user_pref("browser.search.defaulturl", "http://www.google.com/search?&hl=ja&q=");
user_pref("browser.search.selectedEngine", "G");

user_pref("browser.cache.disk.capacity", 640000);
user_pref("browser.chrome.toolbar_style", 1);
user_pref("browser.history_expire_days", 90);
user_pref("browser.cache.memory.capacity", 512);
user_pref("network.http.max-connections", 128);
user_pref("network.http.max-connections-per-server", 10);
user_pref("network.http.max-connections-per-proxy", 128);
user_pref("network.http.max-persistent-connections-per-proxy", 32);
user_pref("network.http.max-persistent-connections-per-server", 32);


user_pref("network.enableIDN", false);

user_pref("browser.sessionhistory.max_total_viewers", 0);

user_pref("network.http.pipelining", true);
user_pref("network.http.pipelining.firstrequest", true);
user_pref("network.http.pipelining.maxrequests", 16);
user_pref("nglayout.initialpaint.delay", 0);
user_pref("content.notify.backoffcount", 5);
user_pref("plugin.expose_full_path", true);
user_pref("ui.submenuDelay", 0); 
user_pref("content.interrupt.parsing", true);
user_pref("content.max.tokenizing.time", 2250000);
user_pref("content.notify.interval", 750000);
user_pref("content.notify.ontimer", true);
user_pref("content.switch.threshold", 750000);

user_pref("browser.chrome.content.main-window_sizemode", normal);
user_pref("browser.chrome.content.main-window_width", 1300);
user_pref("browser.chrome.content.main-window_height", 1050);
user_pref("browser.chrome.content.main-window_screenX", 40);
user_pref("browser.chrome.content.main-window_screenY", 0);