OK, it's not that easy.
o- mod_fcgi is not good for opcode cache
o- mdm-itk is aware of user permissions but is not threaded
o- suexec is not compatible with opcode cache
o- mdm-worker + mod_fcgid show "Forbidden. You don't have permission to access /forum/mybb/index.php on this server."
o- mod-fastcgi does work with opcode cache, but is not a part of Ubuntu distribution anymore (will need to compile it).
I see no chances to use mpm-worker so far.
Back to preforked, cgid and mod_php. Next step is moving to fastcgi (mod_fastcgi or mod_fcgi).
o- mod_fcgi is not good for opcode cache
o- mdm-itk is aware of user permissions but is not threaded
o- suexec is not compatible with opcode cache
o- mdm-worker + mod_fcgid show "Forbidden. You don't have permission to access /forum/mybb/index.php on this server."
o- mod-fastcgi does work with opcode cache, but is not a part of Ubuntu distribution anymore (will need to compile it).
I see no chances to use mpm-worker so far.
Back to preforked, cgid and mod_php. Next step is moving to fastcgi (mod_fastcgi or mod_fcgi).