I am using a Ubuntu 12 Server with Plesk 12 running on it.
I get the following-error in irregular distances which ends up with an Internal Server error!
When I reload the page it's the same problem but after about a minute the error disapears.
[time] [error] [client x.x.x.x] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, referer: http://host.co/test
[time] [error] [client x.x.x.x] Premature end of script headers: index.php, referer
I have tried a lot (checking my permissions, changing the FcgidBusyTimeout, …) but it has become even worse (my subjective grading).
Can you please try to increase following setting on your server under fcgid.conf file.
FcgidIdleTimeout 3600
FcgidIdleScanInterval 480
FcgidBusyTimeout 1800
FcgidBusyScanInterval 480
FcgidZombieScanInterval 12
FcgidErrorScanInterval 12