Sitecore - version created in other language when renaming

So 开发者_C百科I've got this Sitecore content item right, and it's got one version in one language "en-AU".

I have 3 potential languages in the system "en", "en-AU" and "en-NZ".

I rename the item, right, and Sitecore creates a new version in "en".

I delete the "en" version and rename again, same result.. a new version is created .. and again... and again .. see where I'm going with this? And again!

Why would it do that? I thought it was a problem with my pipeline processor, but I turned it off and it still happens!

Any ideas would be welcome.

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What's the default language on your Sitecore user account? (Sitecore > Control Panel > Preferences)

If you create a new item, what language is it created in?