I believe z0d was indirectly refering to the fact that FastCGI can be configured to run as different uids for different users. This is similiar to the suexec functionality of regular CGI programs. I know someone who chose FastCGI over mod_perl for this reason at a webhosting site. Multiple unrelated users have less of a chance to step on each others toes this way.

So, its not a question of compromising my mod_perl process vs. my fastcgi process... Its a matter of limiting others security holes from becoming my problem.

p.s. I'm a mod_perl guy myself... but I couldn't refute this aspect when my friend told me about his webhosting gig.

-Blake