Only in countdown: countdown5.module
diff -urp countdown5/countdown.info countdown/countdown.info
--- countdown5/countdown.info	2007-01-16 03:30:03.000000000 -0500
+++ countdown/countdown.info	2008-05-11 12:42:55.000000000 -0400
@@ -2,7 +2,9 @@
 name = Countdown
 description = Adds a block to count the days, hours, minutes, and seconds since or until a specified event.
 package = "Event"
+dependencies[] = "event"
+core = 6.x
+version = "6.x-1.x-dev"
 ; Information added by drupal.org packaging script on 2007-01-16
-version = "5.x-1.0"
 project = "countdown"
 
diff -urp countdown5/countdown.module countdown/countdown.module
--- countdown5/countdown.module	2007-01-15 18:34:37.000000000 -0500
+++ countdown/countdown.module	2008-05-11 12:37:25.000000000 -0400
@@ -11,9 +11,9 @@
  * @param string $section
  * @return string
  */
-function countdown_help($section) {
+function countdown_help($path, $arg) {
   $output = '';
-  switch ($section) {
+  switch ($path) {
     case 'admin/help#countdown':
       $output = t("Don't forget to configure the event name and date in Administer/blocks/Countdown configure");
       break;