Description:
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I'm in the UK, and requests of the form:

http://php.net/header

are sometimes redirecting to:

http://uk2.php.net/header

and sometimes redirecting to:

http://uk.php.net/header

both of which appear to be the Japanese language version of the "header" man page.

My Accept-Language header is set to

en-AU,en-GB;q=0.9,en;q=0.9,ja;q=0.8,fr;q=0.8,de;q=0.7,es;q=0.6,it;q=0.6,nl;q=0.5,sv;q=0.5,nb;q=0.4,da;q=0.4,fi;q=0.3,pt;q=0.2,zh-Hans;q=0.2,zh-Hant;q=0.1,ko;q=0.1

Reproduce code:
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From the UK, go to

http://php.net/header

Expected result:
----------------
I'm redirected to an English page e.g.

http://us2.php.net/header

Actual result:
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I'm redirected to a Japanese page.