diff -up caja-2.27.4/libcaja-private/apps_caja_preferences.schemas.in.config caja-2.27.4/libcaja-private/apps_caja_preferences.schemas.in
--- caja-2.27.4/libcaja-private/apps_caja_preferences.schemas.in.config	2009-08-12 21:07:44.331994084 -0400
+++ caja-2.27.4/libcaja-private/apps_caja_preferences.schemas.in	2009-08-12 21:26:31.258991695 -0400
@@ -169,7 +169,7 @@
       <owner>caja</owner>
       <type>list</type>
       <list_type>string</list_type>
-      <default>[x-content/software]</default>
+      <default>[]</default>
       <locale name="C">
          <short>List of x-content/* types where the preferred application will be launched</short>
          <long>
@@ -187,7 +187,7 @@
       <owner>caja</owner>
       <type>list</type>
       <list_type>string</list_type>
-      <default>[]</default>
+      <default>[x-content/software]</default>
       <locale name="C">
          <short>List of x-content/* types set to "Do Nothing"</short>
          <long>