Description:
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When I am trying add a note to function unset() I recieve error:

<!-- failed to open socket to master.php.net -->
There was an internal error processing your submission. Please try to submit again later 

And, ua.php.net mirror waiting for socket about 5 minutes. ua2.php.net mirror waiting for socket about 20 seconds

Reproduce code:
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Try to add note to function unset() from mirror ua.php.net or ua2.php.net

Expected result:
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note added

Actual result:
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failed to open socket to master.php.net