cc1: warnings being treated as errors
pk-prefs.c: In function 'pk_prefs_freq_combo_changed':
pk-prefs.c:113: warning: 'freq' may be used uninitialized in this function

then

cc1: warnings being treated as errors
pk-prefs.c: In function 'pk_prefs_update_combo_changed':
pk-prefs.c:146: warning: 'update' may be used uninitialized in this function

Technically, it won't ever be used as the one case the compiler thinks that this is an issue is a g_assert().... but this breaks builds with -Werror, such as: http://koji.fedoraproject.org/koji/getfile?taskID=306061&name=build.log and the fix is trivial and seems proper as there are variables to start the assignment off with.

--- gnome-packagekit-0.1.5/src/pk-prefs.c.Werror        2007-11-22 23:11:52.000000000 +0100
+++ gnome-packagekit-0.1.5/src/pk-prefs.c       2007-12-30 04:21:25.000000000 +0100
@@ -110,7 +110,7 @@ pk_prefs_freq_combo_changed (GtkWidget *
 {
        gchar *value;
        const gchar *action;
-       PkFreqEnum freq;
+       PkFreqEnum freq = PK_FREQ_ENUM_UNKNOWN;
        GConfClient *client;
 
        client = gconf_client_get_default ();
@@ -142,7 +142,7 @@ pk_prefs_update_combo_changed (GtkWidget
 {
        gchar *value;
        const gchar *action;
-       PkUpdateEnum update;
+       PkUpdateEnum update = PK_UPDATE_ENUM_UNKNOWN;
        GConfClient *client;
        GtkWidget *check_widget;
        GtkWidget *notify_widget;