hey, just trying to compile this thingy but tom@localhost ~/programsSRC/jackmix-0.3 $ QTDIR=/usr scons configure qtlibs=/usr/lib/qt4 prefix=/usr scons: Reading SConscript files ... ** installation prefix for the project set to: /usr Checking for uic: uic was found as /usr/bin/uic Checking for UIC version : fine - Qt User Interface Compiler version 4.2.1 Checking for moc: moc was found as /usr/bin/moc Checking for rcc: rcc was found as /usr/bin/rcc Checking for the qt includes : the qt headers were found in /usr/include/qt4/ Checking for jack...ok scons: done reading SConscript files. scons: Building targets ... scons: Nothing to be done for `configure'. scons: done building targets. tom@localhost ~/programsSRC/jackmix-0.3 $ tom@localhost ~/programsSRC/jackmix-0.3 $ scons scons: Reading SConscript files ... Checking for jack...ok scons: done reading SConscript files. scons: Building targets ... g++ -I/usr/include/qt4 -Wall -Werror -g -fpic -O2 -DNDEBUG -DNO_DEBUG -Ibackend -I. -Ibackend -Ilibcore -c -o backend/jack_backend.o backend/jack_backend.cpp cc1plus: warnings being treated as errors libcore/guiserver_interface.h:14: warning: 'class JackMix::GuiServer_Interface' has virtual functions but non-virtual destructor scons: *** [backend/jack_backend.o] Error 1 scons: building terminated because of errors. what could you suggest?