Comment 8 for bug 478034

Yes, I meant the output of the "uname -r" command.
Try to run:
$ sudo apt-get remove linux-image-2.6.31-15-generic linux-image-2.6.31-17-generic linux-image-2.6.31-19-generic
$ sudo apt-get install --reinstall linux-image-generic linux-generic
$ sudo apt-get install linux-image-2.6.31-19-generic

for "the problem can be solved by doing so" I meant:
>$ sudo apt-get update
>$ sudo apt-get -f install
>$ sudo apt-get clean
>$ sudo apt-get autoclean
>then $ sudo apt-get dist-upgrade
>
>if you have got any error:
>$ sudo apt-get update
>$ sudo update-grub
>$ sudo apt-get -f install
>$ sudo apt-get dist-upgrade

Regards,

Lorenzo D. (alias BlackZ).