gintama wiki is using advance hosting, so I was able to install multiple installations of the Mediawiki software, i.e. there is a different Mediawiki installation for each language, 1 for English, 1 for Japanese, 1 for Simplified Chinese and the last for Traditional Chinese, a total of 4 different MW setup. All 4 are using different URL if you look closely.
If you look at Special:version page, you will see the English MW version is different from the other 3 which were installed later.
It does appear that Advance hosting applications has been suspended:http://wikkii.com/wiki/Advanced_Hosting