Looks like the kde.org mirrors are missing the Qt packages for powerpc. Specifically:
Package: libqt3-mt (It's in binary-i386) but under binary-powerpc, these are the only libqt3 packages: Package: libqt3-compat-headers Package: libqt3-headers Package: libqt3-i18n Package: libqt3-plugins-headers There's a number of Qt packages missing, including the qt-embedded dev kit etc. Shows how many people use the PPC packages ;) David