Hi. I know this has been asked before because I saw forums regarding this but apparently their problem was solved by the owners of the PPA.
I encounter the message below when trying to install Ubuntu SDk. I used the command line provided in Ubuntu's official site. I have Ubuntu 13.04 32-bit.
Hopefully I can find a solution because I'm really excited to create my own app for Ubuntu Touch

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
ubuntu-sdk : Depends: libqt5webkit5-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.