Comment 2 for bug 394944

Examining your DpkgTerminalLog.txt file it seems this is a duplicate of bug 269539 so I am marking it as such. Please continue to track this issue at that report.

From DpkgTerminalLog.txt:

Merging changes into the new version

 Conflicts found! Please edit `/var/run/grub/menu.lst' and sort them out manually.
 The file `/var/run/grub/menu.lst.ucf-new' has a record of the failed merge of the configuration file.

User postinst hook script [/sbin/update-grub] exited with value 3
dpkg: błąd przetwarzania linux-image-2.6.28-13-generic (--configure):
 podproces post-installation script zwrócił kod błędu 3