This is often caused by an incorrect mod_rewrite rule in the VirtualHost container or in the .htaccess file.
Something like this will cause it: RewriteRule /([a-z0-9]+) /pastebin.php?show=$1 When it should be: RewriteRule ^/([a-z0-9]+)$ /pastebin.php?show=$1 Turning on RewriteLog will help see the problem, which is that the fcgi Alias is also matched by the RewriteRule and applied; the imprecise regular-expression matches part of the fcgi path and corrupts it: RewriteEngine on RewriteLog /home/domain.net/logs/rewrite.log RewriteLogLevel 9 RewriteRule /([a-z0-9]+) /pastebin.php?show=$1 logs/error.log shows: [warn] (104)Connection reset by peer: mod_fcgid: read data from fastcgi server error. [error] [client 1.2.3.4] Premature end of script headers: pastebin.php logs/rewrite.log shows: (2) init rewrite engine with requested uri /info.php (3) applying pattern '/([a-z0-9]+)' to uri '/info.php' (2) rewrite '/info.php' -> '/pastebin.php?show=info' (3) split uri=/pastebin.php?show=info -> uri=/pastebin.php, args=show=info (2) local path result: /pastebin.php (2) prefixed with document_root to /home/domain.net/domains/pastebin.domain.net/public_html/pastebin.php (1) go-ahead with /home/domain.net/domains/pastebin.domain.net/public_html/pastebin.php [OK] (2) init rewrite engine with requested uri /fcgi-bin/php-fcgi-wrapper/info.php (3) applying pattern '/([a-z0-9]+)' to uri '/fcgi-bin/php-fcgi-wrapper/info.php' (2) rewrite '/fcgi-bin/php-fcgi-wrapper/info.php' -> '/pastebin.php?show=fcgi' (3) split uri=/pastebin.php?show=fcgi -> uri=/pastebin.php, args=show=fcgi (2) local path result: /pastebin.php (2) prefixed with document_root to /home/domain.net/domains/pastebin.domain.net/public_html/pastebin.php (1) go-ahead with /home/domain.net/domains/pastebin.domain.net/public_html/pastebin.php [OK] -- php5 5.2.3-1ubuntu6.2 causing problem https://bugs.launchpad.net/bugs/173817 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs