I'd tested the version 0.0.3 on Debian whessy.
I'd compiled the php version 5.3.28 in through the folder "/opt/php-fcgid/5.3"
In the config.php the memcached option is activated.
PHP 5.3.28
/opt/php-fcgid/5.3/bin/php-cgi
/var/www/fcgi
This is what i added in the interface.
Now i wanted to change the value als customer, but the fcgi-wrapper script does not change.
What i-MSCP Server implementation are you using?
Fcgid