Index: imagefield_widget.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/imagefield/imagefield_widget.inc,v
retrieving revision 1.37
diff -u -r1.37 imagefield_widget.inc
--- imagefield_widget.inc	20 Apr 2009 23:51:35 -0000	1.37
+++ imagefield_widget.inc	16 May 2009 22:23:23 -0000
@@ -12,6 +12,10 @@
 function imagefield_widget_settings_form($widget) {
   $form = module_invoke('filefield', 'widget_settings', 'form', $widget);
 
+  if ($form['file_extensions']['#default_value'] == 'txt') {
+    $form['file_extensions']['#default_value'] = 'png gif jpg jpeg';
+  }
+
   $form['max_resolution'] = array(
     '#type' => 'textfield',
     '#title' => t('Maximum resolution for Images'),