I would like to update VirtualBox on my 32 bit Ubuntu 15.04 machine from 4.3.26 to 4.3.28, using a Debian package I manually downloaded from here. But simply double-clicking the package opens up the Software Centre which gives an error that installing it would break an existing package (the exact message was:
Breaks existing package 'virtualbox' conflict: virtualbox-4.3 ()
and it does not appear to have an option to ignore this and proceed with the installation anyway. Is there a command-line work-around this problem, perhaps?