instalei o joomla 2.5.6 e o 2.5.7 ambos apresentaram a seguinte msng apos login do admin: PHP Warning: usort() [<a href='function.usort'>function.usort</a>]: Array was modified by the user comparison function in E:\home\rvdm\Web\libraries\joomla\utilities\arrayhelper.php on line 463
sera que alguem pode me ajudar pois a 1.5 funciona corretamente.