diff --git a/dibi/dibi.php b/dibi/dibi.php
index b5489a93..e5c9d1bd 100644
--- a/dibi/dibi.php
+++ b/dibi/dibi.php
@@ -26,6 +26,7 @@ if (version_compare(PHP_VERSION, '5.1.0', '<')) {
 	throw new Exception('dibi needs PHP 5.1.0 or newer.');
 }
 
+@set_magic_quotes_runtime(FALSE); // intentionally @
 
 
 
@@ -525,7 +526,7 @@ class dibi
 	public static function select($args)
 	{
 		$args = func_get_args();
-		return self::getConnection()->command()->__call('select', $args);
+		return call_user_func_array(array(self::getConnection(), 'select'), $args);
 	}
 
 
@@ -648,7 +649,8 @@ class dibi
 	public static function setSubstFallback($callback)
 	{
 		if (!is_callable($callback)) {
-			throw new InvalidArgumentException("Invalid callback.");
+			$able = is_callable($callback, TRUE, $textual);
+			throw new InvalidArgumentException("Handler '$textual' is not " . ($able ? 'callable.' : 'valid PHP callback.'));
 		}
 
 		self::$substFallBack = $callback;
diff --git a/dibi/libs/DibiTranslator.php b/dibi/libs/DibiTranslator.php
index 2e9207b6..a9fecfd9 100644
--- a/dibi/libs/DibiTranslator.php
+++ b/dibi/libs/DibiTranslator.php
@@ -260,7 +260,7 @@ final class DibiTranslator extends DibiObject
 					$pair = explode('%', $k, 2); // split into identifier & modifier
 					$vx[] = $this->formatValue($v, isset($pair[1]) ? $pair[1] : FALSE);
 				}
-				return '(' . implode(', ', $vx) . ')';
+				return '(' . ($vx ? implode(', ', $vx) : 'NULL') . ')';
 
 
 			case 'v': // (key, key, ...) VALUES (val, val, ...)
@@ -291,7 +291,7 @@ final class DibiTranslator extends DibiObject
 				foreach ($value as $v) {
 					$vx[] = $this->formatValue($v, $modifier);
 				}
-				return implode(', ', $vx);
+				return $vx ? implode(', ', $vx) : 'NULL';
 			}
 		}
 
diff --git a/dibi/libs/interfaces.php b/dibi/libs/interfaces.php
index 74e7ece4..9e47e0e5 100644
--- a/dibi/libs/interfaces.php
+++ b/dibi/libs/interfaces.php
@@ -122,8 +122,6 @@ interface IDibiDriver
 	 */
 	function connect(array &$config);
 
-
-
 	/**
 	 * Disconnects from a database.
 	 * @return void
@@ -131,8 +129,6 @@ interface IDibiDriver
 	 */
 	function disconnect();
 
-
-
 	/**
 	 * Internal: Executes the SQL query.
 	 * @param  string      SQL statement.
@@ -141,24 +137,18 @@ interface IDibiDriver
 	 */
 	function query($sql);
 
-
-
 	/**
 	 * Gets the number of affected rows by the last INSERT, UPDATE or DELETE query.
 	 * @return int|FALSE  number of rows or FALSE on error
 	 */
 	function getAffectedRows();
 
-
-
 	/**
 	 * Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query.
 	 * @return int|FALSE  int on success or FALSE on failure
 	 */
 	function getInsertId($sequence);
 
-
-
 	/**
 	 * Begins a transaction (if supported).
 	 * @param  string  optinal savepoint name
@@ -167,8 +157,6 @@ interface IDibiDriver
 	 */
 	function begin($savepoint = NULL);
 
-
-
 	/**
 	 * Commits statements in a transaction.
 	 * @param  string  optinal savepoint name
@@ -177,8 +165,6 @@ interface IDibiDriver
 	 */
 	function commit($savepoint = NULL);
 
-
-
 	/**
 	 * Rollback changes in a transaction.
 	 * @param  string  optinal savepoint name
@@ -187,8 +173,6 @@ interface IDibiDriver
 	 */
 	function rollback($savepoint = NULL);
 
-
-
 	/**
 	 * Returns the connection resource.
 	 * @return mixed
@@ -210,8 +194,6 @@ interface IDibiDriver
 	 */
 	function escape($value, $type);
 
-
-
 	/**
 	 * Decodes data from result set.
 	 * @param  string    value
@@ -221,8 +203,6 @@ interface IDibiDriver
 	 */
 	function unescape($value, $type);
 
-
-
 	/**
 	 * Injects LIMIT/OFFSET to the SQL query.
 	 * @param  string &$sql  The SQL query that will be modified.
@@ -244,8 +224,6 @@ interface IDibiDriver
 	 */
 	function getRowCount();
 
-
-
 	/**
 	 * Moves cursor position without fetching row.
 	 * @param  int      the 0-based cursor pos to seek to
@@ -254,8 +232,6 @@ interface IDibiDriver
 	 */
 	function seek($row);
 
-
-
 	/**
 	 * Fetches the row at current position and moves the internal cursor to the next position.
 	 * @param  bool     TRUE for associative array, FALSE for numeric
@@ -264,8 +240,6 @@ interface IDibiDriver
 	 */
 	function fetch($type);
 
-
-
 	/**
 	 * Frees the resources allocated for this result set.
 	 * @param  resource  result set resource
@@ -273,8 +247,6 @@ interface IDibiDriver
 	 */
 	function free();
 
-
-
 	/**
 	 * Returns metadata for all columns in a result set.
 	 * @return array
@@ -282,8 +254,6 @@ interface IDibiDriver
 	 */
 	function getColumnsMeta();
 
-
-
 	/**
 	 * Returns the result set resource.
 	 * @return mixed
@@ -302,8 +272,6 @@ interface IDibiDriver
 	 */
 	function getTables();
 
-
-
 	/**
 	 * Returns metadata for all columns in a table.
 	 * @param  string
@@ -311,8 +279,6 @@ interface IDibiDriver
 	 */
 	function getColumns($table);
 
-
-
 	/**
 	 * Returns metadata for all indexes in a table.
 	 * @param  string
@@ -320,8 +286,6 @@ interface IDibiDriver
 	 */
 	function getIndexes($table);
 
-
-
 	/**
 	 * Returns metadata for all foreign keys in a table.
 	 * @param  string
diff --git a/examples/datetime.demo.php b/examples/datetime.demo.php
index 33e29155..d50c61ee 100644
--- a/examples/datetime.demo.php
+++ b/examples/datetime.demo.php
@@ -4,8 +4,6 @@
 require_once 'Nette/Debug.php';
 require_once '../dibi/dibi.php';
 
-
-// required since PHP 5.1.0
 date_default_timezone_set('Europe/Prague');
 
 
diff --git a/examples/fluent.test.php b/examples/fluent.test.php
index 9aa4b7c4..7dea3f99 100644
--- a/examples/fluent.test.php
+++ b/examples/fluent.test.php
@@ -4,6 +4,8 @@
 require_once 'Nette/Debug.php';
 require_once '../dibi/dibi.php';
 
+date_default_timezone_set('Europe/Prague');
+
 
 dibi::connect(array(
 	'driver'   => 'sqlite',
diff --git a/examples/logger.php b/examples/logger.php
index 74f1feca..088c7872 100644
--- a/examples/logger.php
+++ b/examples/logger.php
@@ -4,6 +4,8 @@
 require_once 'Nette/Debug.php';
 require_once '../dibi/dibi.php';
 
+date_default_timezone_set('Europe/Prague');
+
 
 dibi::connect(array(
 	'driver'   => 'sqlite',
diff --git a/examples/metatypes.php b/examples/metatypes.php
index a8b9f81a..89f48a8a 100644
--- a/examples/metatypes.php
+++ b/examples/metatypes.php
@@ -5,6 +5,8 @@
 require_once 'Nette/Debug.php';
 require_once '../dibi/dibi.php';
 
+date_default_timezone_set('Europe/Prague');
+
 
 dibi::connect(array(
 	'driver'   => 'sqlite',
diff --git a/examples/sql-builder.php b/examples/sql-builder.php
index 7b286e2d..7a997171 100644
--- a/examples/sql-builder.php
+++ b/examples/sql-builder.php
@@ -8,7 +8,6 @@ pre.dibi { padding-bottom: 10px; }
 require_once 'Nette/Debug.php';
 require_once '../dibi/dibi.php';
 
-// required since PHP 5.1.0
 date_default_timezone_set('Europe/Prague');