root@saiya-jin:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
  software-center
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
16 not fully installed or removed.
Need to get 0 B/622 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]?
(Reading database ... 465604 files and directories currently installed.)
Preparing to replace software-center 5.2.5 (using .../software-center_5.2.6_all.deb) ...
Could not find platform independent libraries <prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
ImportError: No module named site
dpkg: warning: subprocess old pre-removal script returned error exit status 1
dpkg - trying script from the new package instead ...
Could not find platform independent libraries <prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
ImportError: No module named site
dpkg: error processing /var/cache/apt/archives/software-center_5.2.6_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 1
Could not find platform independent libraries <prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
ImportError: No module named site
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/software-center_5.2.6_all.deb
Error org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@saiya-jin:~#