Created attachment 310135 [details] qtcurve-qt4.build.log Seems like =icu-49* is producing broken config.h files in these packages...
Created attachment 310137 [details] gtk-engines-qtcurve.build.log
Unable to load library icui18n "Cannot load library icui18n: (libicui18n.so.48: cannot open shared object file: No such file or directory)" Something is still linked to the old libraries, did you run revdep-rebuild?
Oh damn... I suppose this came from me playing around a bit with icu versions. Yes I ran revdep-rebuild when I first found this problem but I will do so once agaion to be sure...
Sounds like this could be bug #413541.
*** This bug has been marked as a duplicate of bug 413541 ***