Index: t3lib/class.t3lib_tcemain.php
===================================================================
--- t3lib/class.t3lib_tcemain.php	(revision 3851)
+++ t3lib/class.t3lib_tcemain.php	(working copy)
@@ -694,9 +694,10 @@
 									// The $pid_value is now the numerical pid at this point
 								if ($OK)	{
 									$sortRow = $TCA[$table]['ctrl']['sortby'];
+									$sortPosition = $incomingFieldArray[$sortRow] === 'last' ? 'last' : 'first';
 									if ($pid_value>=0)	{	// Points to a page on which to insert the element, possibly in the top of the page
 										if ($sortRow)	{	// If this table is sorted we better find the top sorting number
-											$fieldArray[$sortRow] = $this->getSortNumber($table,0,$pid_value);
+											$fieldArray[$sortRow] = $this->getSortNumber($table, 0, $pid_value, $sortPosition);
 										}
 										$fieldArray['pid'] = $pid_value;	// The numerical pid is inserted in the data array
 									} else {	// points to another record before ifself
@@ -5967,23 +5968,28 @@
 	 * @param	string		Table name
 	 * @param	integer		Uid of record to find sorting number for. May be zero in case of new.
 	 * @param	integer		Positioning PID, either >=0 (pointing to page in which case we find sorting number for first record in page) or <0 (pointing to record in which case to find next sorting number after this record)
+	 * @param	string		define position, 'first' return sorting as first element, 'last' returns sorting as last element
 	 * @return	mixed		Returns integer if PID is >=0, otherwise an array with PID and sorting number. Possibly false in case of error.
 	 */
-	function getSortNumber($table,$uid,$pid)	{
+	function getSortNumber($table, $uid, $pid, $position='first')	{
 		global $TCA;
 		if ($TCA[$table] && $TCA[$table]['ctrl']['sortby'])	{
 			$sortRow = $TCA[$table]['ctrl']['sortby'];
 			if ($pid>=0)	{	// Sorting number is in the top
-				$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery($sortRow.',pid,uid', $table, 'pid='.intval($pid).$this->deleteClause($table), '', $sortRow.' ASC', '1');		// Fetches the first record under this pid
+				$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery($sortRow.',pid,uid', $table, 'pid='.intval($pid).$this->deleteClause($table), '', $sortRow . ($position === 'last' ? ' DESC' : ' ASC'), '1');		// Fetches the first record under this pid
 				if ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{	// There was an element
 					if ($row['uid']==$uid)	{	// The top record was the record it self, so we return its current sortnumber
 						return $row[$sortRow];
 					}
-					if ($row[$sortRow] < 1) {	// If the pages sortingnumber < 1 we must resort the records under this pid
-						$this->resorting($table,$pid,$sortRow,0);
-						return $this->sortIntervals;	// First sorting number after resorting
+					if ($position === 'last') { 
+						return $row[$sortRow] + $this->sortIntervals;
 					} else {
-						return floor($row[$sortRow]/2);	// Sorting number between current top element and zero
+						if ($row[$sortRow] < 1) {	// If the pages sortingnumber < 1 we must resort the records under this pid
+							$this->resorting($table,$pid,$sortRow,0);
+							return $this->sortIntervals;	// First sorting number after resorting
+						} else {
+							return floor($row[$sortRow]/2);	// Sorting number between current top element and zero
+						}
 					}
 				} else {	// No pages, so we choose the default value as sorting-number
 					return $this->sortIntervals;	// First sorting number if no elements.