Computer:  Gericom Blockbuster Excellent 7000 251A7 with Pentium M
Dothan 1,6GHz

#################################
[EMAIL PROTECTED]:/proc$ cat cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Pentium(R) M processor 1.60GHz
stepping        : 6
cpu MHz         : 600.000
cache size      : 2048 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr mce cx8 apic sep mtrr pge mca cmov pat 
clflush dts acpi mmx fxsr sse sse2 ss tm pbe up est tm2
bogomips        : 1205.01
clflush size    : 64
#################################


I did the following to get linux-image-general in version 2.6.22-14.52 to work 
agaein after an update from an older 2.6.22-14:
- Debugged and replaced my ACPI-DSDT-table according to this how-to: 
http://wiki.ubuntuusers.de/acpi-fix (it workes without, too)
- tried to load speedstep-centrino and acpi-cpufreq with no success
- went into my BIOS and chosen the option "Load optimized defaults" multiple 
times and saved the settings
- after a reboot I re-adjusted the settings (boot range and so on) to my  
preferences

Now, it works again. Maybe, it will help someone here.

Results:
$ cat scaling_driver 
acpi-cpufreq


$ cat scaling_governor 
ondemand


 cat scaling_available_frequencies 
1600000 1400000 1200000 1000000 800000 600000 


$ cat scaling_cur_freq 
600000


** Attachment added: "the debugged DSDT.aml for this Laptop"
   http://launchpadlibrarian.net/11941383/dsdt.aml

-- 
speedstep-centrino driver not working on Pentium-M with ICH6 chipset - 
acpi-cpufreq driver used instead
https://bugs.launchpad.net/bugs/120759
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