Index: branches/unlabeled/unlabeled-1.35.2/kernel/include/itemdb.php
===================================================================
diff -u -r7837 -r7880
--- branches/unlabeled/unlabeled-1.35.2/kernel/include/itemdb.php	(.../itemdb.php)	(revision 7837)
+++ branches/unlabeled/unlabeled-1.35.2/kernel/include/itemdb.php	(.../itemdb.php)	(revision 7880)
@@ -371,7 +371,7 @@
   {
   	 global $Errors;
   	 
-     $sql = "INSERT INTO ".$this->tablename." (";
+     $sql = "INSERT IGNORE INTO ".$this->tablename." (";
      $first  = 1;
      foreach ($this->Data as $key => $value)
      {
@@ -654,28 +654,18 @@
     
     function TableExists($table = null)
     {
-    	static $tables_found  = Array ();
-    	
-    	if ($table == null) $table = $this->tablename;
-    	
-    	if (!isset($tables_found[$table])) {
 	    	// checks if table specified in item exists in db	
 	    	$db =& GetADODBConnection();
 	    	$sql = "SHOW TABLES LIKE '%s'";
-	    	
+    	if($table == null) $table = $this->tablename;
 	    	$rs = $db->Execute( sprintf($sql, $table) );
-	    	if ($rs->RecordCount() == 1) {
-	    		// table exists in normal case
-	    		$tables_found[$table] = 1;
-	    	}
-	    	else {
-	    		// check if table exists in lowercase
+    	
+    	if( $rs->RecordCount() == 1 ) // table exists in normal case
+    		return 1;
+    	else // check if table exists in lowercase
 	    		$rs = $db->Execute( sprintf($sql, strtolower($table) ) );
-	    		$tables_found[$table] = $rs->RecordCount() == 1 ? 1 : 0;
-	    	}
-    	}
     	
-    	return $tables_found[$table];
+    	return ($rs->RecordCount() == 1) ? 1 : 0;
     }
     
     function raiseEvent($name, $id = null)