Comment 3 for bug 1129856

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  libqtcore4
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
22 not fully installed or removed.
Need to get 0 B/1,552 kB of archives.
After this operation, 5,092 kB of additional disk space will be used.
(Reading database ... 218529 files and directories currently installed.)
Preparing to unpack .../libqtcore4_4%3a4.8.7+dfsg-5ubuntu2_amd64.deb ...
Unpacking libqtcore4:amd64 (4:4.8.7+dfsg-5ubuntu2) ...
dpkg: error processing archive /var/cache/apt/archives/libqtcore4_4%3a4.8.7+dfsg-5ubuntu2_amd64.deb (--unpack):
 trying to overwrite shared '/etc/xdg/Trolltech.conf', which is different from other instances of package libqtcore4:amd64
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Errors were encountered while processing:
 /var/cache/apt/archives/libqtcore4_4%3a4.8.7+dfsg-5ubuntu2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

So I guess I still can't so anything...