diff --git a/addressbook/inc/class.boaddressbook.inc.php b/addressbook/inc/class.boaddressbook.inc.php
index 26a2e4d45b..0954311e15 100644
--- a/addressbook/inc/class.boaddressbook.inc.php
+++ b/addressbook/inc/class.boaddressbook.inc.php
@@ -562,6 +562,11 @@
 				$fields = $this->xmlrpc2data($fields);
 			}
 			$id = $this->so->add_entry($fields);
+			
+			if(id)
+			{
+				$GLOBALS['phpgw']->contenthistory->updateTimeStamp('contacts', $id, 'add', time());
+			}
 
 			if ($this->xmlrpc && !$id)
 			{
@@ -589,6 +594,11 @@
 					$fields = $this->xmlrpc2data($fields);
 				}
 				$ok = $this->so->update_entry($fields);
+				if(ok)
+				{
+					$GLOBALS['phpgw']->contenthistory->updateTimeStamp('contacts', $fields['ab_id'], 'modify', time());
+				}
+
 			}
 			if ($this->xmlrpc && !$ok)
 			{
@@ -617,6 +627,7 @@
 			if($this->check_perms($id,PHPGW_ACL_DELETE))
 			{
 				$this->so->delete_entry($id);
+				$GLOBALS['phpgw']->contenthistory->updateTimeStamp('contacts', $id, 'delete', time());
 			}
 			elseif ($this->xmlrpc)
 			{
diff --git a/calendar/inc/class.bocalendar.inc.php b/calendar/inc/class.bocalendar.inc.php
index 972ed98e6a..1eec795c56 100755
--- a/calendar/inc/class.bocalendar.inc.php
+++ b/calendar/inc/class.bocalendar.inc.php
@@ -603,6 +603,7 @@
 			if($this->check_perms(PHPGW_ACL_DELETE,$id))
 			{
 				$this->so->delete_entry($id);
+				$GLOBALS['phpgw']->contenthistory->updateTimeStamp('calendar', $id, 'delete', time());
 
 				if ($this->xmlrpc)
 				{
@@ -1095,6 +1096,7 @@
 				{
 					$this->so->add_entry($event);
 					$this->send_update(MSG_ADDED,$event['participants'],'',$this->get_cached_event());
+					$GLOBALS['phpgw']->contenthistory->updateTimeStamp('calendar', $event['id'], 'add', time());
 					print_debug('New Event ID',$event['id']);
 				}
 				else
@@ -1117,6 +1119,7 @@
 					}
 					$this->so->cal->event = $event;
 					$this->so->add_entry($event);
+					$GLOBALS['phpgw']->contenthistory->updateTimeStamp('calendar', $event['id'], 'modify', time());
 					$this->prepare_recipients($new_event,$old_event);
 				}
 
diff --git a/infolog/inc/class.boinfolog.inc.php b/infolog/inc/class.boinfolog.inc.php
index 6729bcf656..f6fee8b38f 100644
--- a/infolog/inc/class.boinfolog.inc.php
+++ b/infolog/inc/class.boinfolog.inc.php
@@ -279,7 +279,11 @@
 
 			$this->link->unlink(0,'infolog',$info_id);
 
+			$info = $this->read($info_id);
+
 			$this->so->delete($info_id,$delete_children,$new_parent);
+			
+			$GLOBALS['phpgw']->contenthistory->updateTimeStamp('infolog_'.$info['info_type'], $info_id, 'delete', time());
 		}
 
 		/**
@@ -379,7 +383,27 @@
 			{
 				if ($values[$time]) $values[$time] -= $this->tz_offset_s;
 			}
-			return $this->so->write($values);
+			if($infoID = $this->so->write($values))
+			{
+				if($values['info_id'])
+				{
+					// update
+					$GLOBALS['phpgw']->contenthistory->updateTimeStamp(
+						'infolog_'.$values['info_type'], 
+						$infoID, 'modify', time()
+					);
+				}
+				else
+				{
+					// add
+					$GLOBALS['phpgw']->contenthistory->updateTimeStamp(
+						'infolog_'.$values['info_type'], 
+						$infoID, 'add', time()
+					);
+				}
+			}
+			
+			return $infoID;
 		}
 
 		function anzSubs( $info_id )