this is the backtrace:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1225295584 (LWP 4130)]
0xb77e5b11 in QWidget::isAncestorOf (this=0x8097140, child=0x804ca08) at kernel/qwidget.cpp:6049
/home/elis/downloads/qt-x11-opensource-src-4.3.4/src/gui/kernel/qwidget.cpp:6049:181840:beg:0xb77e5b11


Eli