Since upgrading to Qt 5.4.0 alpha, Konsole crashes when closing it. It doesn't matter whether I achieve this by Ctrl+D or just by closing the window. Konsole (and all KF5 components) are up-to-date from git as of now. The backtrace is rather short and I couldn't find a similar one amongst all other "Crash on closing" reports. Application: konsole (konsole), signal: Segmentation fault Using host libthread_db library "/lib64/libthread_db.so.1". [KCrash Handler] #6 QString::~QString (this=0x292b028, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:124 #7 0x00007f7e050ff1bb in QDBusConnectionPrivate::~QDBusConnectionPrivate (this=0x292b010, __in_chrg=<optimized out>) at qdbusintegrator.cpp:1054 #8 0x00007f7e050ff409 in QDBusConnectionPrivate::~QDBusConnectionPrivate (this=0x292b010, __in_chrg=<optimized out>) at qdbusintegrator.cpp:1072 #9 0x00007f7e050f3435 in QDBusConnectionManager::~QDBusConnectionManager (this=0x7f7e0515e940 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, __in_chrg=<optimized out>) at qdbusconnection.cpp:106 #10 0x00007f7e050f34e9 in (anonymous namespace)::Q_QGS__q_manager::innerFunction()::Holder::~Holder() () at qdbusconnection.cpp:67 #11 0x00007f7e04a8b0b9 in __run_exit_handlers (status=0, listp=0x7f7e04df75a8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82 #12 0x00007f7e04a8b105 in __GI_exit (status=<optimized out>) at exit.c:104 #13 0x00007f7e04a74e7c in __libc_start_main (main=0x400860 <main(int, char**)>, argc=1, argv=0x7fff1325ed78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff1325ed68) at libc-start.c:319 #14 0x0000000000400891 in _start ()