That is not an official site for mIRC. The only country mirrors which are official can be seen at the top on the main mIRC page (Argentina, Australia, Italy, Kuwait, South Africa, United Kingdom, USA).
There is only an English version of mIRC. The same version is downloaded from each mirror site. Your version is not created by Khaled and has been configured to be a different language. Whether this is bad for your computer is debateable, but anything which isn't the true official original copy is somewhat fishy - especially if you're not using the latest version.
