--- modules/field/modules/number/number.module	Thu Jun 30 03:20:10 2011
+++ modules/field/modules/number/number.module	Sat Jul 16 23:39:36 2011
@@ -339,11 +339,11 @@
   // Add prefix and suffix.
   if (!empty($instance['settings']['prefix'])) {
     $prefixes = explode('|', $instance['settings']['prefix']);
-    $element['#field_prefix'] = field_filter_xss(array_pop($prefixes));
+    $element['#field_prefix'] = field_filter_xss(t(array_pop($prefixes)));
   }
   if (!empty($instance['settings']['suffix'])) {
     $suffixes = explode('|', $instance['settings']['suffix']);
-    $element['#field_suffix'] = field_filter_xss(array_pop($suffixes));
+    $element['#field_suffix'] = field_filter_xss(t(array_pop($suffixes)));
   }
 
   $element['#element_validate'][] = 'number_field_widget_validate';