TYPO3 Core

I will update the extensions list and i become always this error message:

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 1832219 bytes) in /home/www/account13/typo3_src-4.1beta1a/typo3/mod/tools/em/class.em_xmlhandler.php on line 141

From the class.em_xmlhandler.php
function saveExtensionsXML() {
LINE 141: t3lib_div::writeFile(PATH_site.'typo3temp/extensions.bin',gzcompress(serialize($this->extXMLResult)));
t3lib_div::writeFile(PATH_site.'typo3temp/reviewstates.bin',gzcompress(serialize($this->reviewStates)));
}

System: Debian Sarge 3.1
PHP Version 5.2.0-0.dotdeb.2 with Suhosin Patch 0.9.6.1 and Zend Engine 2.2.0

Allowed memory: 64MB
(issue imported from #M4620)