I have installed the latest kernel in the repository (i.e. apt-get install linux-image-2.6.20-16-386) and after the restart everything works fine. I don't know why the linux-386 metapackage that is already installed uses the linux-image-2.6.20-15-386 package.
...Problem Resolved for my dell c640 laptop!
I have installed the latest kernel in the repository (i.e. apt-get install linux-image- 2.6.20- 16-386) and after the restart everything works fine. I don't know why the linux-386 metapackage that is already installed uses the linux-image- 2.6.20- 15-386 package.