Of course, I pasted the wrong part of my code: Was: On Wed, Mar 18, 2009 at 12:56 PM, Piotr Qzieblo <qtpiotrek at gmail.com> wrote: > connect(this, SIGNAL(stopSig()), this, SLOT(quit()), Qt::QueuedConnection); should be: connect(this, SIGNAL(stopSig()), this, SLOT(stopSlot()), Qt::QueuedConnection); P.