Found this solution over at our brothers from Ubuntu.
Works fine under F14
Compaq 6710b laptop
Linux klaptop2 184.108.40.206-64.fc14.i686 #1 SMP Fri Dec 3 12:35:42 UTC 2010 i686 i686 i386 GNU/Linux
One core is used nearly 100% by kacpid as shown by <top>
echo disable > /sys/firmware/acpi/interrupts/gpe01
After reboot kacpid is gone from the list in <top>
Thanks Ubuntu brothers!