Miért jön ki ez a jommlánál? (lent)

Feltöltöttem a joomlát az atw-és honlapomra

"Warning: session_start() [function.session-start]: open(/tmp/sess_c7e16f3a1f599d5a4df0a5b98e5e6b12, O_RDWR) failed: No such file or directory (2) in /publict_html/joomla_1.6.1_in_hungarian_formal_(hungary)/libraries/joomla/session/session.php on line 411

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /publict_html/joomla_1.6.1_in_hungarian_formal_(hungary)/libraries/joomla/session/session.php:411) in /publict_html/joomla_1.6.1_in_hungarian_formal_(hungary)/libraries/joomla/session/session.php on line 411

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /publict_html/joomla_1.6.1_in_hungarian_formal_(hungary)/libraries/joomla/session/session.php:411) in /publict_html/joomla_1.6.1_in_hungarian_formal_(hungary)/libraries/joomla/session/session.php on line 411"

Ez jön ki de nem csak ez hanem a telepítő is csak ez mellé is és ilyen furcsa betűk vannak benne.