I recently got a 9,04 version of ubuntu and for the past day i was trying to install skype ( sounds funny i know ) and when I write 'sudo apt-get install skype' I get this error in the terminal

The following packages have unmet dependencies:
  skype: Depends: libqt4-dbus (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed
         Depends: libqt4-network (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed
         Depends: libqtcore4 (>= 4.4.3) but 4.4.0-1ubuntu5~hardy1 is to be installed
         Depends: libqtgui4 (>= 4.4.3) but it is not installable

How could I fix this problem? THanks