Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1230432576 (LWP 2511)]
0xb72e2143 in memmove () from /lib/i686/cmov/libc.so.6
(gdb) bt
#0  0xb72e2143 in memmove () from /lib/i686/cmov/libc.so.6
#1  0xb75e0b65 in QVector<QPersistentModelIndexData*>::erase (this=0x812d050, 
    abegin=0x8b5a17c, aend=0x8b5a180)
    at ../../include/QtCore/../../src/corelib/tools/qvector.h:547
#2  0xb75e0bbe in QVector<QPersistentModelIndexData*>::erase (this=0x812d050, 
    pos=0x8b5a17c)
    at ../../include/QtCore/../../src/corelib/tools/qvector.h:201
#3  0xb75d9faa in QAbstractItemModel::changePersistentIndexList (
    this=0x80ed988, from=@0xbfccf938, to=@0xbfccf930)
    at kernel/qabstractitemmodel.cpp:2295
#4  0xb7d2deac in QListModel::sort (this=0x80ed988, column=0, 
    order=Qt::AscendingOrder) at itemviews/qlistwidget.cpp:277
#5  0xb7d2bee4 in QListWidget::sortItems (this=0x80efd08, 
    order=Qt::AscendingOrder) at itemviews/qlistwidget.cpp:1443
#6  0x080565dc in GUI::AddUserToList ()