Index: branches/5.0.x/core/install/install_toolkit.php
===================================================================
diff -u -r12199 -r12269
--- branches/5.0.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 12199)
+++ branches/5.0.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 12269)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: install_toolkit.php 12199 2009-08-05 15:59:15Z alex $
+* @version	$Id: install_toolkit.php 12269 2009-08-11 13:25:48Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -305,13 +305,27 @@
 			}
 
 			$sqls = str_replace("\r\n", "\n", $sqls);  // convert to linux line endings
-			$sqls = preg_replace("/#([^;]*?)\n/", '', $sqls); // remove all comments
-			$sqls = explode(";\n", $sqls . "\n"); // ensures that last sql won't have ";" in it
+			$no_comment_sqls = preg_replace("/#\s([^;]*?)\n/is", '', $sqls); // remove all comments "#" on new lines
 
+			if ($no_comment_sqls === null) {
+				// "ini.pcre.backtrack-limit" reached and error happened
+				$sqls = explode(";\n", $sqls . "\n"); // ensures that last sql won't have ";" in it
+				$sqls = array_map('trim', $sqls);
+
+				// remove all comments "#" on new lines (takes about 2 seconds for 53000 sqls)
+				$sqls = preg_replace("/#\s([^;]*?)/", '', $sqls);
+			}
+			else {
+				$sqls = explode(";\n", $no_comment_sqls . "\n"); // ensures that last sql won't have ";" in it
+				$sqls = array_map('trim', $sqls);
+			}
+
+			$sql_count = count($sqls);
 			$db_collation = $this->getSystemConfig('Database', 'DBCollation');
-			for ($i=$start_from; $i<count($sqls); $i++) {
-				$sql = trim($sqls[$i]);
-				if (!$sql) {
+
+			for ($i = $start_from; $i < $sql_count; $i++) {
+				$sql = $sqls[$i];
+				if (!$sql || (substr($sql, 0, 1) == '#')) {
 					continue; // usually last line
 				}