Description:
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When I call apc_delete() to remove cache, next stored cache is always "false", but second, third etc. is OK

Reproduce code:
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<?php

  apc_clear_cache('user');

  apc_store('lock_CCCC', 1, 2);

  apc_store('CCCC', 129021, 3001);

  apc_delete('lock_CCCC');

  apc_store('tag_A', '100', 86400);
  apc_store('tag_B', '200', 86400);

  var_dump(apc_fetch('tag_A')); // prints "boolean false"
  var_dump(apc_fetch('tag_B')); // prints "string '200' (length=3)"

?>

Expected result:
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I expected to get in output 2 string:

First:  "string '100' (length=3)"
Second: "string '200' (length=3)"