Latest updates want to remove half my system!

[Mark Greenwood]

Just got a notification about some new updates, two days after I upgraded to KDE 4.4 from the ppa:

sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED
  apport-kde apturl-kde gdebi-kde install-package jockey-kde k3b kdebase-workspace kdebase-workspace-bin
  kdebase-workspace-data kpackagekit kscreensaver kubuntu-desktop kubuntu-firefox-installer language-selector-qt
  plasma-desktop plasma-scriptengine-python plasma-widget-facebook plasma-widget-googlecalendar
  plasma-widget-kubuntu-qa-feedback plasma-widget-networkmanagement printer-applet python-kde4
  software-properties-kde system-config-printer-kde ubufox update-manager-kde update-notifier-kde usb-creator-kde
  userconfig
The following packages will be upgraded:
  python-qt4 python-qt4-dbus servicemenu-mediainfo
3 upgraded, 0 newly installed, 29 to remove and 0 not upgraded.
Need to get 5,183kB of archives.
After this operation, 77.6MB disk space will be freed.

This can't be right, can it? Can anybody explain what's going on?

Thanks,

Mark