[Plugin: SI CAPTCHA Anti-Spam] network-wide install configuration

I have a si-captcha plugin site-wide install. I would like to not have it randomly creating files in si-captcha-for-wordpress/captcha/temp, and thus it doesn’t have write access to that folder (an aside, readme.txt doesn’t inform the administrator that he needs to either re-enable sessions support or let the httpd write to si-captcha-for-wordpess/captcha/temp). However, it appears that I have to go manually through every “site” in my wp networked installed and enable sessions there, a nontrivial and monotonous task.

May you thus please add support for configuring the si-captcha plugin site-wide? It may make sense for some settings to be site-specific, but whether or not si-captcha-for-wordpress/captcha/temp is even writable has site-wide influence. The manager of a particular site has no access to randomly chmod si-captcha-for-wordpress/captcha/temp and thus shouldn’t even see the option.

http://wordpress.org/extend/plugins/si-captcha-for-wordpress/