Add %s to the command in the Gnome url handlers....

third_party/xdg-utils/scripts/xdg-settings.in

Index: third_party/xdg-utils/scripts/xdg-settings.in
===================================================================
--- third_party/xdg-utils/scripts/xdg-settings.in	(revision 26314)
+++ third_party/xdg-utils/scripts/xdg-settings.in	(working copy)
@@ -326,13 +326,13 @@
     gconftool-2 --type bool --set /desktop/gnome/applications/browser/nremote true
     # Set the handler for HTTP and HTTPS.
     for protocol in http https; do
-        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary"
+        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary %s"
         gconftool-2 --type bool --set /desktop/gnome/url-handlers/$protocol/needs_terminal false
         gconftool-2 --type bool --set /desktop/gnome/url-handlers/$protocol/enabled true
     done
     # Set the handler for about: and unknown URL types.
     for protocol in about unknown; do
-        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary"
+        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary %s"
     done
 }