iain-XPS-8700 ~ $ sudo apt-get install openvpn
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies.
 libqt4-sql-mysql:i386 : Depends: libqt4-sql:i386 (= 4:4.8.5+git192-g085f851+dfsg-2ubuntu4) but 4:4.8.5+git192-g085f851+dfsg-2ubuntu4.1 is to be installed
                         Depends: libqtcore4:i386 (= 4:4.8.5+git192-g085f851+dfsg-2ubuntu4) but 4:4.8.5+git192-g085f851+dfsg-2ubuntu4.1 is to be installed
 openvpn : Depends: libpkcs11-helper1 (>= 1.05) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).