fastcgi restarting problem

I've got the following problem.
I have perl-fastcgi application on apache 2/linux 2.6 server:

Apache/2.0.54 (Unix) mod_ssl/2.0.54 OpenSSL/0.9.7g DAV/2 mod_fastcgi/2.4.2 
Server at trzciniak Port 80

When I turn my computer on and try to login into my application I can not use 
my application. After I login in to it the application menu is displayed, but 
when I want to see my postgres data the fastcgi restarts itself and I am back 
in login screen. However, when I update my main fastcgi file then I can 
correctly work in the application (during all the session - until the machine 
is restarted). I can restart apache, postgres - no problem. But whenever I 
restart machine I have problem. I have checked it on two differen machines.

my fastcgi config in apache is of the form:

#######################
LoadModule fastcgi_module modules/mod_fastcgi.so
<IfModule mod_fastcgi.c>
    ScriptAlias /fast/ "/home/www/fast/"
    <Directory /home/www/fast/>
	Order allow,deny
	Allow from all
        SetHandler fastcgi-script
        Options +ExecCGI
    </Directory>
    FastCgiConfig -autoUpdate
    AddHandler fastcgi-script .fcgi .fpl
</IfModule>
#######################

Is anyone able to help me?
Could it be connected with amount of memmory on the machines?
First has 256MB the second 98MB and the second's fastcgi restarts very offen.

Thanks

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