mjastrzebski2@mjastrzebski2-Inspiron-N5010:~$ apt-cache policy libkdecore5 libkdeui4 libsolid4 libkio5                 
libkdecore5:
  Installed: 4:4.8.5-0ubuntu0.1
  Candidate: 4:4.8.5-0ubuntu0.1
  Version table:
 *** 4:4.8.5-0ubuntu0.1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     4:4.8.4a-0ubuntu0.2 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
     4:4.8.2-0ubuntu1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
libsolid4:
  Installed: 4:4.8.5-0ubuntu0.1
  Candidate: 4:4.8.5-0ubuntu0.1
  Version table:
 *** 4:4.8.5-0ubuntu0.1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     4:4.8.4a-0ubuntu0.2 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
     4:4.8.2-0ubuntu1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
libkio5:
  Installed: 4:4.8.2-0ubuntu1
  Candidate: 4:4.8.5-0ubuntu0.1
  Version table:
     4:4.8.5-0ubuntu0.1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
     4:4.8.4a-0ubuntu0.2 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
 *** 4:4.8.2-0ubuntu1 0
        500 http://pl.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status
N: Unable to locate package libkdeui4