Hi. This is quite probably related to the kontact 3.2 / kdelibs 3.3 mix. If so, it should not block kontact 4:3.2.3-1 from staying in sarge (since it is expected that kdelibs 4:3.2.3-x will stay in sarge also). Though the bug presumably came with the kdelibs upgrade (not the kontact upgrade), so I'm not sure what BTS tag is appropriate in such a scenario.
b.