Koffice 1.3 has been marked stable, but the corresponding package koffice-i18n is still marked unstable. The result is that koffice 1.2 is upgraded to 1.3, but translations are lost. I would suggest marking koffice-i18n 1.3 stable, or else marking koffice 1.3 unstable - they should go hand in hand. However, koffice-i18n compiles fine on my machine.
thanks - didn't realize it was unstable.