I updated patch for make apache at directadmin to actual version 2.2.21 from 2.2.17
http://tresnet.ru/sw/patches/apache2.2-mpm-itk-2.2.21.patch
http://tresnet.ru/sw/patches/apache2.2-mpm-itk-2.2.21.patch
# Up from 2.2.17 to 2.2.21 by Nikolay Vaganov, FastVPS tech department
I guess Nikolay was not clear enough, the patch has something to do with mpm-itk (the patch for which is currently available only for Apache 2.2.17). So let him to explain, who would ever want to use the patch.