I just made an upgrade from PHP 5.3 to 5.4 via dotdeb.org sources. After that, I get errors on vhosts with active FastCGI-Application.
[Mon May 20 21:05:15 2013] [warn] [client xxx.xxx.xxx.xxx] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Mon May 20 21:05:15 2013] [error] [client xxx.xxx.xxx.xxx] Premature end of script headers: index.php
I have a Debian Squeeze root server with Plesk (version 11.0.9).