fastcgi+php=lots of 500 errors ?

Hi,

When using php with mod_fastcgi , i get a HUGE number of 500 errors and this 
line in the error log:
FastCGI: incomplete headers (0 bytes) received from server 
"/usr/local/bin/php-fcgi/php.fcgi"

I have a moderated traffic (~200req per second on 3 servers), and these 
500's occurs 2-3 times per second on each server.

My actual config is the same on both servers:
---
FastCgiWrapper On
FastCgiConfig -gainValue 0.8 -killInterval 5 -listen-queue-depth 
512 -maxClassProcesses 96 -maxProcesses 192 -multiThreshold 
60 -singleThreshold 1 -startDelay 1 -updateInterval 5
ScriptAlias /fcgi-bin/ "/usr/local/bin/php-fcgi/"
<Location /fcgi-bin/>
        Options ExecCGI
        SetHandler fastcgi-script
</Location>

AddHandler php-script .php .inc .pinc .phtml .php3 .php4
Action php-script /fcgi-bin/php.fcgi
---

It appears that if i raise the killinterval AND updateinterval, the number 
of errors decrease after a restart of apache, but as the uptime grows, the 
number of errors grows too...

i haven't succeed to reproduce this bug as it seems to be very random (but 
it happens very more often when the traffic increases)

Anyone have an idea about this *very* annoying effect ?

Oh, i forgot to mention the software versions:
apache 2.0.53
php 4.3.10
mod_fastcgi-snap-0404142202

-- 
Gabriel Barazer <gabriel-G2fI/[email protected]>
REAGI

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