Package: kdelibs Version: 1.9 I believe there is a bug in the Compaq C++ compiler that makes it unable to perform the following lookup correctly. If you add the namespace, then the compiler is able to find the Job class. I have reported this bug to the compiler group and it will be fixed, but I'd appreciate if this patch could be applied until then. ./kdelibs/kfile/kdirsize.cpp.orig 90c90 < Job::slotResult( job ); --- > KIO::Job::slotResult( job );