In theory, new major releases are issued on a half-year basis, and release branches continue to receive security updates for up to a year as of first release
Vector provides enhancements to the Vector skin. This extension requires MediaWiki 1.24+.
The ConfirmAccount extension disables direct account creation and requires the approval of new accounts by a bureaucrat
This page gives a basic introduction to debugging MediaWiki software
If the only file you have modified is LocalSettings.php, and you are upgrading from 1.5 or later, the process is very simple. YES 🙂
The FancyBoxThumbs extension displays thumbnailed images in a Mac-style „lightbox“ that floats overtop of web page. This can create a more user friendly environment, where the user doesn’t leave the page every time they click a thumbnail.