Thread: broken package manager for natty 11.04

i have ubuntu natty narhwal 11.04 , ive tried update programs, did , says package manager broken. looked on forum , followed instructions on on following steps started different results other guy had same problem,
first tried
sudo apt-get install -fand didnt work, switched around guy said to
sudo apt-get -f install
, got this,
owner@ubuntu:~$ sudo apt-get -f install
[sudo] password owner:
reading package lists... done
building dependency tree
reading state information... done
correcting dependencies... done
following packages automatically installed , no longer required:
linux-headers-2.6.38-8 linux-headers-2.6.38-8-generic
use 'apt-get autoremove' remove them.
following packages installed:
update-manager
following packages upgraded:
update-manager
1 upgraded, 0 newly installed, 0 remove , 3 not upgraded.
2 not installed or removed.
need 0 b/650 kb of archives.
after operation, 0 b of additional disk space used.
want continue [y/n]? y
dpkg: error: reading package info file '/var/lib/dpkg/available': input/output error
e: sub-process /usr/bin/dpkg returned error code (2)
owner@ubuntu:~$

tried other suggestion,
sudo dpkg --configure -aand got this,

owner@ubuntu:~$ sudo dpkg --configure -a
setting linux-image-2.6.38-11-generic (2.6.38-11.50) ...
running depmod.
failed run depmod
dpkg: error processing linux-image-2.6.38-11-generic (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of update-manager:
update-manager depends on update-manager-core (= 1:0.150.3); however:
version of update-manager-core on system 1:0.150.5.1.
dpkg: error processing update-manager (--configure):
dependency problems - leaving unconfigured
errors encountered while processing:
linux-image-2.6.38-11-generic
update-manager
owner@ubuntu:~$

im beginner did bit of research after hours of going in circles on own , looked on forum, cant seem hold of problem or fix it, can me please? appreciated,
scott

sudo apt-get clean
sudo apt-get install -f
sudo apt-get update

execute things 1 one , give output got


best.

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