Hi Mithrandir.

I also found "IP ban" issue on last sunday.
Many DoS attacks were done that day, and my server was forced to hang.

My idea to resolving this issue is that calling check_dos_attack_prepare()
method from postcheck.inc.php instead of precheck.inc.php.

How do you think?

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In Japanese.
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check_dos_attack_prepare() の呼出を、precheck.inc.phpからpostcheck.inc.phpに移して、
先にcommon.php内でIP拒否をさせた方が良いのでは？
ってアイデアなんですが、いかがでしょうか？