Ошибка с timezone

Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Moscow' for '3.0/no DST' instead in \home\localhost\www\portal\www\libraries\utilities\date.php on line 56

Для исправления в файле php.ini

укажите

date.timezone = "Europe/Moscow"

эта ошибка возникает при переходе с php 5.2 на php 5.3