diff -up gimp-2.6.0/app/config/gimpguiconfig.c.xdg-open gimp-2.6.0/app/config/gimpguiconfig.c
--- gimp-2.6.0/app/config/gimpguiconfig.c.xdg-open	2008-09-30 23:21:55.000000000 +0200
+++ gimp-2.6.0/app/config/gimpguiconfig.c	2008-10-02 12:12:14.000000000 +0200
@@ -45,7 +45,7 @@
 #elif HAVE_CARBON
 #  define DEFAULT_WEB_BROWSER  "open %s"
 #else
-#  define DEFAULT_WEB_BROWSER  "firefox %s"
+#  define DEFAULT_WEB_BROWSER  "xdg-open %s"
 #endif
 
 
diff -up gimp-2.6.0/docs/gimprc.5.in.xdg-open gimp-2.6.0/docs/gimprc.5.in
--- gimp-2.6.0/docs/gimprc.5.in.xdg-open	2008-09-29 20:46:42.000000000 +0200
+++ gimp-2.6.0/docs/gimprc.5.in	2008-10-02 12:10:24.000000000 +0200
@@ -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-2.6.0/etc/gimprc.xdg-open gimp-2.6.0/etc/gimprc
--- gimp-2.6.0/etc/gimprc.xdg-open	2008-09-29 20:46:42.000000000 +0200
+++ gimp-2.6.0/etc/gimprc	2008-10-02 12:10:24.000000000 +0200
@@ -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")
 
 # When enabled, the online user manual will be used by the help system.
 # Otherwise the locally installed copy is used.  Possible values are yes and