diff -up gimp-2.4.0/docs/gimprc.5.in.xdg-open gimp-2.4.0/docs/gimprc.5.in
--- gimp-2.4.0/docs/gimprc.5.in.xdg-open	2007-10-22 21:45:59.000000000 +0200
+++ gimp-2.4.0/docs/gimprc.5.in	2007-10-29 14:53:34.000000000 +0100
@@ -788,7 +788,7 @@ Sets the browser used by the help system
 web-browser.
 
 .TP
-(web-browser "firefox %s")
+(web-browser "xdg-open %s")
 
 Sets the external web browser to be used.  This can be an absolute path or the
 name of an executable to search for in the user's PATH. If the command
diff -up gimp-2.4.0/etc/gimprc.xdg-open gimp-2.4.0/etc/gimprc
--- gimp-2.4.0/etc/gimprc.xdg-open	2007-10-22 21:45:59.000000000 +0200
+++ gimp-2.4.0/etc/gimprc	2007-10-29 14:37:49.000000000 +0100
@@ -625,7 +625,7 @@
 # appended to the command with a space separating the two.  This is a single
 # filename.
 # 
-# (web-browser "firefox %s")
+# (web-browser "xdg-open %s")
 
 # The window type hint that is set on the toolbox. This may affect how your
 # window manager decorates and handles the toolbox window.  Possible values
diff -up gimp-2.4.0/app/config/gimpguiconfig.c.xdg-open gimp-2.4.0/app/config/gimpguiconfig.c
--- gimp-2.4.0/app/config/gimpguiconfig.c.xdg-open	2007-05-21 10:56:29.000000000 +0200
+++ gimp-2.4.0/app/config/gimpguiconfig.c	2007-10-29 14:37:49.000000000 +0100
@@ -40,7 +40,7 @@
 #ifdef G_OS_WIN32
 #  define DEFAULT_WEB_BROWSER      "not used on Windows"
 #else
-#  define DEFAULT_WEB_BROWSER      "firefox %s"
+#  define DEFAULT_WEB_BROWSER      "xdg-open %s"
 #endif