Hi all! I've seen this error some 300 times at the beginning of boot process. System goes up and works with no issue. It is nforce3 250 with amd64, 6.0 os. Using sysctl, I've found the line: dev.acpi_perf.0.%driver: acpi_perf In bios acpi apic is turned off, due to acpi errors from 5.4 era. Kernel includes cpufreq and powerd is in rc.conf. Is there any known command for sysctl to change "driver"? Or should I put apic back? Would be nice to have temperature reading on this mobo to compare cpufreq effect. Best regards Zoran