--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -643,22 +643,16 @@ pref("plugin.default.state", 1);
 // Plugins bundled in XPIs are enabled by default.
 pref("plugin.defaultXpi.state", 2);
 
 // Flash is enabled by default, and Java is click-to-activate by default on
 // all channels.
 pref("plugin.state.flash", 2);
 pref("plugin.state.java", 1);
 
-#ifdef XP_MACOSX
-pref("browser.preferences.animateFadeIn", true);
-#else
-pref("browser.preferences.animateFadeIn", false);
-#endif
-
 #ifdef XP_WIN
 pref("browser.preferences.instantApply", false);
 #else
 pref("browser.preferences.instantApply", true);
 #endif
 
 pref("browser.download.show_plugins_in_list", true);
 pref("browser.download.hide_plugins_without_extensions", true);

--- a/browser/themes/windows/preferences/preferences.css
+++ b/browser/themes/windows/preferences/preferences.css
@@ -57,22 +57,16 @@
   border: 1px solid ThreeDShadow;
   border-radius: 0;
   margin: 4px;
   padding: 0;
 }
 
 /* Advanced Pane */
 
-/* Adding padding-bottom prevents the bottom of the tabpanel from being cutoff
-   when browser.preferences.animateFadeIn = true */
-#advancedPrefs {
-  padding-bottom: 8px;
-}
-
 /* bottom-most box containing a groupbox in a prefpane. Prevents the bottom
    of the groupbox from being cutoff */
 .bottomBox {
   padding-bottom: 4px;
 }
 
 /* Sync Pane */