Ubuntu 8.0.4 can not update and install new software

[chenym]

Hi, everyone
My ubuntu 8.0.4 cann't update and install new software any more! when
doing these works, following message is displayed:

preparing to replace util-linux 2.13.1-5ubuntu2
(using .../util-linux_2.13.1-5ubuntu3_i386.deb) ...
install-info: donn't specify the index file；try --help to obtain more
information。
dpkg：warning -  older pre-removal script, when exitting, return error
code 1
dpkg - now, try ro use new software package's script...
install-info: don not specify index file; try --help to obtain more
information。
dpkg：while
dealing /var/cache/apt/archives/util-linux_2.13.1-5ubuntu3_i386.deb
(--unpack), errors occur：
subprocess, new pre-removal scirpt, return error code 1
install-info：unrecognized option“--description=System V interprocess
communication facilities”
try “install-info --help” to get complete list about option。
dpkg: while finish clean, error occur:
subprocess post-installation script return error code 1
while dealing, following error occur：
/var/cache/apt/archives/util-linux_2.13.1-5ubuntu3_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

why?
-- 
Yiming Chen
The National Key Laboratory of Parallel and Distributed Computation
ChangSha, Hunan, P.R.China