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Date: Sun, 04 Apr 2010 13:42:59 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Akephalos Akephalos <akephalos.akephalos@gmail.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: CPU problems after 8.0-STABLE update
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on 04/04/2010 09:32 Akephalos Akephalos said the following:
> - 'top -P' displays only one CPU and its load is 0% everything all the time,
> despite any load

So this is probably the root cause.
Do you I have any unusual messages in dmesg after the upgrade?
Anything about RTC?

-- 
Andriy Gapon