diff -up gimp-2.6.2/app/config/gimpguiconfig.c.xdg-open gimp-2.6.2/app/config/gimpguiconfig.c

--- gimp-2.6.2/app/config/gimpguiconfig.c.xdg-open	2008-10-30 10:27:56.000000000 +0100

+++ gimp-2.6.2/app/config/gimpguiconfig.c	2008-10-31 11:25:54.000000000 +0100

@@ -45,7 +45,7 @@

 #elif PLATFORM_OSX

 #  define DEFAULT_WEB_BROWSER  "open %s"

 #else

-#  define DEFAULT_WEB_BROWSER  "firefox %s"

+#  define DEFAULT_WEB_BROWSER  "xdg-open %s"

 #endif

diff -up gimp-2.6.2/docs/gimprc.5.in.xdg-open gimp-2.6.2/docs/gimprc.5.in

--- gimp-2.6.2/docs/gimprc.5.in.xdg-open	2008-10-30 10:29:00.000000000 +0100

+++ gimp-2.6.2/docs/gimprc.5.in	2008-10-31 11:24:26.000000000 +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-2.6.2/etc/gimprc.xdg-open gimp-2.6.2/etc/gimprc

--- gimp-2.6.2/etc/gimprc.xdg-open	2008-10-30 10:33:24.000000000 +0100

+++ gimp-2.6.2/etc/gimprc	2008-10-31 11:24:26.000000000 +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")

 # 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