I don't know exactly the cause of this issue, but it's either of two things:
1. If it's something wrong with MediaWiki's settings, Halkun *might* be able to do something about it. I'm pretty sure he's got admin on the wiki. Alas, I do not, so I can't do anything about it.
2. If it's a server problem, literally the only person who has the low-level access needed to fix it is Qhimm, and... well, he's really busy these days and barely around anymore on IRC, and even less so on the forums, despite owning them.