Warning: touch() [function.touch]: Unable to create file /home/math/public_html/typo3temp/locks/e992624e1493da924ec8be4d6a30f821 because Permission denied in /opt/typo3/4.2.1/t3lib/class.t3lib_lock.php on line 170

Warning: fopen(/home/math/public_html/typo3temp/llxml/xml_2933aa011f.de.iso-8859-1.cache) [function.fopen]: failed to open stream: Permission denied in /opt/typo3/4.2.1/t3lib/class.t3lib_div.php on line 2661
ERROR: File not written to disk! Write permission error in filesystem?