diff --git a/users/willifan/applications.nix b/users/willifan/applications.nix
index 424506d..a93cc56 100644
--- a/users/willifan/applications.nix
+++ b/users/willifan/applications.nix
@@ -26,6 +26,4 @@
 
   ];
 
-  virtualisation.virtualbox.guest.enable = true;
-  virtualisation.virtualbox.host.enable = true;
 }
diff --git a/users/willifan/graphical/firefox.nix b/users/willifan/graphical/firefox.nix
index 2e090fe..38f61f3 100644
--- a/users/willifan/graphical/firefox.nix
+++ b/users/willifan/graphical/firefox.nix
@@ -12,11 +12,16 @@
             "browser.search.defaultenginename" = "DuckDuckGo";
             "browser.search.order.1" = "DuckDuckGo";
             "media.videocontrols.picture-in-picture.video-toggle.enabled" = false;
+            "extensions.pictureinpicture.enable_picture_in_picture_overrides" = false;
+            "signon.management.page.breach-alerts.enabled" = false;
+            "signon.rememberSignons" = false;
+            "browser.startup.page" = 3;
             "browser.aboutConfig.showWarning" = false;
             "browser.bookmarks.restore_default_bookmarks" = false;
             "browser.contentblocking.category" = "standard";
             "browser.toolbars.bookmarks.visibility" = "never";
             "browser.translations.panelShown" = false;
+            "browser.uiCustomization.state" = "{\"placements\":{\"unified-extensions-area\":[\"sponsorblocker_ajay_app-browser-action\",\"ublock0_raymondhill_net-browser-action\",\"_762f9885-5a13-4abd-9c77-433dcd38b8fd_-browser-action\"],\"nav-bar\":[\"back-button\",\"forward-button\",\"stop-reload-button\",\"customizableui-special-spring1\",\"urlbar-container\",\"customizableui-special-spring2\",\"downloads-button\",\"unified-extensions-button\",\"simple-tab-groups_drive4ik-browser-action\",\"firefox-enpass_enpass_io-browser-action\"],\"toolbar-menubar\":[\"menubar-items\"],\"TabsToolbar\":[\"tabbrowser-tabs\",\"new-tab-button\"],\"PersonalToolbar\":[]},\"seen\":[\"save-to-pocket-button\",\"developer-button\",\"firefox-enpass_enpass_io-browser-action\",\"ublock0_raymondhill_net-browser-action\",\"simple-tab-groups_drive4ik-browser-action\",\"sponsorblocker_ajay_app-browser-action\",\"_762f9885-5a13-4abd-9c77-433dcd38b8fd_-browser-action\"],\"dirtyAreaCache\":[\"nav-bar\",\"PersonalToolbar\",\"toolbar-menubar\",\"TabsToolbar\",\"unified-extensions-area\"],\"currentVersion\":20,\"newElementCount\":2}";
           };
           search = {
             force = true;
@@ -38,5 +43,3 @@
 }
 
 
-
-#user_pref("extensions.pictureinpicture.enable_picture_in_picture_overrides", true);
diff --git a/users/willifan/graphical/thunderbird.nix b/users/willifan/graphical/thunderbird.nix
index 2eb477d..a0d1859 100644
--- a/users/willifan/graphical/thunderbird.nix
+++ b/users/willifan/graphical/thunderbird.nix
@@ -40,6 +40,7 @@
             "mail.account.account1.server" = "server1";
             "mail.account.account2.server" = "server2";
 
+            "mail.biff.play_sound" = false;
             "mail.accountmanager.accounts" = "account1";
             "mail.accountmanager.defaultaccount" = "account1";
             "mail.accountmanager.localfoldersserver" = "server2";
diff --git a/users/willifan/user.nix b/users/willifan/user.nix
index abbb20c..c6e4f9b 100644
--- a/users/willifan/user.nix
+++ b/users/willifan/user.nix
@@ -3,7 +3,7 @@
   users.users.willifan = {
     isNormalUser = true;
     description = "willifan";
-    extraGroups = [ "networkmanager" "wheel" "vboxusers" ];
+    extraGroups = [ "networkmanager" "wheel" ];
     packages = with pkgs; [];
   };