Fan goes much to fast in Ubuntu Linix 9.04

What video card do you have? I suspect an Nvidia 8400 series.

If you do not know then please paste the results of an:

lspci

I do have a Nvidia indeed :)
Asus Nvidia Geforce 8600 GTX

Please can you tell me what you mean by "the results of an lspci?"

I already found a site called LM-sensors.org and downloaded lm_sensors-3.1.1.tar.bz2 , but it is a pain to install it.
I spend some hours on it ( I am a beginner, remember ? :-) ) but I got the same problem all the time:
Bison cannot find lib/conf-parse.c
Here is the list of things I did:

--------------------------------------------------------------------------
I unpacked it and placed it in /usr/local/.
After reading the INSTALL-file I tried to install the dependicies:
-GNU make ( I just use the make of Gnome, is that okay? )
-gcc ( installed )
-bison ( installed )
-flex ( installed )
-rdd header files ( did not find it: no idea what it is )

After that I tried to compile things with make install and later on I tried make all but I got the following error messages all the time:

XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1$ dir
CHANGES COPYING etc lib prog version.h
CONTRIBUTORS doc INSTALL Makefile README
XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1$ make all
Makefile:174: lib/data.ld: Bestand of map bestaat niet
Makefile:174: lib/general.ld: Bestand of map bestaat niet
Makefile:174: lib/error.ld: Bestand of map bestaat niet
Makefile:174: lib/access.ld: Bestand of map bestaat niet
Makefile:174: lib/init.ld: Bestand of map bestaat niet
Makefile:174: lib/sysfs.ld: Bestand of map bestaat niet
Makefile:174: lib/conf-parse.ld: Bestand of map bestaat niet
Makefile:174: lib/conf-lex.ld: Bestand of map bestaat niet
Makefile:174: lib/data.ad: Bestand of map bestaat niet
Makefile:174: lib/general.ad: Bestand of map bestaat niet
Makefile:174: lib/error.ad: Bestand of map bestaat niet
Makefile:174: lib/access.ad: Bestand of map bestaat niet
Makefile:174: lib/init.ad: Bestand of map bestaat niet
Makefile:174: lib/sysfs.ad: Bestand of map bestaat niet
Makefile:174: lib/conf-parse.ad: Bestand of map bestaat niet
Makefile:174: lib/conf-lex.ad: Bestand of map bestaat niet
bison -p sensors_yy -d lib/conf-parse.y -o lib/conf-parse.c
bison: kan bestand `lib/conf-parse.c' niet openen: Toegang geweigerd
make: *** [lib/conf-parse.c] Fout 1
XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1$

XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1$ dir
CHANGES COPYING etc lib prog version.h
CONTRIBUTORS doc INSTALL Makefile README
XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1$ cd lib
XXX@XXX-desktop:/usr/local/lm_sensors-3.1.1/lib$ dir
access.c conf-parse.y error.h init.h sensors.conf.5 test
access.h data.c general.c libsensors.3 sensors.h
conf.h data.h general.h Module.mk sysfs.c
conf-lex.l error.c init.c scanner.h sysfs.h

What do I wrong? A lot, I think :-)

Just forgot to translate the error messages in English:

Bestand of map bestaat niet --> File or directory does not exist
bison: kan bestand `lib/conf-parse.c' niet openen: Toegang geweigerd--> Bison cannot open 'lib/conf-parse.c: Access denied

make: *** [lib/conf-parse.c] Fout 1--> make:***[lib/conv-parse.c]Error 1

Have you got the Nvidia driver installed? With my Nvidia card the fan runs full speed unless I use the restricted Nvidia driver.

Thank you! That did the trick :-))
I installed the 180 version and after starting up again there was silence!

Thank you very, very much!