Overheating and fan problems on HP laptop

This is the "cat /proc/cpuinfo" output...
root@hackbox:/home/lorenzo# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Genuine Intel(R) CPU T2050 @ 1.60GHz
stepping : 8
cpu MHz : 800.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni monitor
est tm2 xtpr
bogomips : 3196.56
clflush size : 64

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Genuine Intel(R) CPU T2050 @ 1.60GHz
stepping : 8
cpu MHz : 800.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni monitor est tm2 xtpr
bogomips : 3192.16
clflush size : 64

This is the "acpi -t" output...
root@hackbox:/home/lorenzo# acpi -t
     Battery 1: charging, 25%, charging at zero rate - will never fully charge.
     Thermal 1: ok, 55.0 degrees C
     Thermal 2: ok, 27.0 degrees C

I'm only running Firefox 2.0.0.3, the CPU temperature is 55°C and the fan is still running... :-(
Thank you!

Thanks for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it, because your description doesn't yet have enough information.
Please include the following additional information, if you have not already done so (please pay attention to lspci's additional options), as required by the Ubuntu Kernel Team:
1. Please include the output of the command 'uname -a' in your next response. It should be one, long line of text which includes the exact kernel version you're running, as well as the CPU architecture.
2. Please run the command 'dmesg > dmesg.log' and attach the resulting file 'dmesg.log' to this bug report.
3. Please run the command 'sudo lspci -vvnn > lspci-vvnn.log' and attach the resulting file 'lspci-vvnn.log' to this bug report.
For your reference, the full description of procedures for kernel-related bug reports is available at https://wiki.ubuntu.com/KernelTeamBugPolicies . Thanks in advance!

Hello,
I resolved the problem by limiting the CPU speed to 800Mhz for each core (I enabled the Powersave mode) and I cleaned up the fan, now it runs only when there is a CPU usage over 5-6%.
Thank you!

This bug report is being closed due to your last comment regarding this being fixed with a configuration change. Thanks again for taking the time to report this bug and helping to make Ubuntu better. Feel free to submit any future bugs you may find.