Can't start xdebug

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http://serverfault.com – I managed to install xdebug and enable it through local php.ini files when needed. It was working just fine for about a month, but today It doesn't. If I try to start a debug session with Zend Studio IDE, it gets stuck in "57% launching: waiting for xdebug session" If I run this command $ sudo netstat -tunlp | grep 9000 on server console, I get: tcp 0 0* LISTEN 1609/php-fpm.conf) phpinfo reports Xdebug v2.1.0 local php.ini zend_extension='/usr/lib/php5/20090626/xdebug.so' [xdebug] xdebug.remote_autostart=Off (HowTos)