Did you see that?
PHP Warning: PHP Startup: apc: Unable to initialize module Module compiled with module API=20060613 PHP compiled with module API=20090626 These options need to match in Unknown on line 0
It may happen with other pecl modules because those mostly was compiled for php 5.2.
My configuration DirectAdmin, Debian 5
Solution?Go to http://pecl.php.net/package/APC, copy link to interesting module, i.e.: http://pecl.php.net/get/APC-3.1.9.tgz
and
wget http://pecl.php.net/get/APC-3.1.9.tgz tar -zxf APC-3.1.9.tgz cd APC-3.1.9 /usr/local/php5/bin/phpize ./configure --with-php-config=/usr/local/php5/bin/php-config make make install