Error Login dashboard

Saya gagal login ke Dashboard dengan pesan sepeti dibawah ini.

Plugin Version: 2.6
Server OS: Linux
Required PHP Version: 5.2+
Current PHP Version: 5.3.10
PHP Safe Mode: is disabled!
Disabled Functions: symlink, gzinflate, str_rot13, gzuncompress, escapeshellarg, escapeshellcmd, proc_close, proc_open, ini_alter, dl, show_source, system, shell_exec, passthru, exec, popen, proc_open, allow_url_fopen
Please enable ‘exec’ function in php.ini!

Disabled Functions: symlink, gzinflate, str_rot13, gzuncompress, escapeshellarg, escapeshellcmd, proc_close, proc_open, ini_alter, dl, show_source, system, shell_exec, passthru, exec, popen, proc_open, allow_url_fopen
Please enable ‘passthru’ function in php.ini!

Mohon petunjuk rekan2 yang sudah berpengalaman, terima kasih