mistake about the cpufreq?

[äéè]

The following is what I get when I run the command in
/sys/devices/system/cpu/cpu0/cpufreq

$ sudo grep "" *
affected_cpus:0
bios_limit:800000
cpuinfo_cur_freq:2800000
cpuinfo_max_freq:2801000
cpuinfo_min_freq:800000
cpuinfo_transition_latency:10000
related_cpus:0 1
scaling_available_frequencies:2801000 2800000 2133000 1600000 800000
scaling_available_governors:conservative ondemand userspace powersave
performance
scaling_cur_freq:800000
scaling_driver:acpi-cpufreq
scaling_governor:performance
scaling_max_freq:800000
scaling_min_freq:800000
scaling_setspeed:<unsupported>

The problem is basically the scalings is different from cpuinfos. It
appears when I unplug the power and still there when I have repluged
the power.
Does any know what probably the problem is and where can I look for
more detail information.

some basic info about my computer

$ uname -a
Linux yuyichao-PC 2.6.39-ARCH #1 SMP PREEMPT Mon Jun 27 21:26:22 CEST
2011 x86_64 Intel(R) Core(TM)2 Duo CPU T9600 @ 2.80GHz GenuineIntel
GNU/Linux
(The kernel version should be 2.6.39.2)


Thanks.

Yichao
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