Pixmap cache crashes

#0  0x00000000 in ?? ()
#1  0xb7d69a69 in QDeclarativePixmapReader::ThreadObject::event (this=0x83ff468, e=0xaeff9a60)
    at /home/martjone/depot/qt/qt-qml/src/declarative/util/qdeclarativepixmapcache.cpp:382
#2  0xb67befb4 in QApplicationPrivate::notify_helper (this=0x8091128, receiver=0x83ff468, 
    e=0xaeff9a60) at /home/martjone/depot/qt/qt-qml/src/gui/kernel/qapplication.cpp:4389
#3  0xb67bf3b7 in QApplication::notify (this=0xbfed2c04, receiver=0x83ff468, e=0xaeff9a60)
    at /home/martjone/depot/qt/qt-qml/src/gui/kernel/qapplication.cpp:3791
#4  0xb6347182 in QCoreApplication::notifyInternal (this=0xbfed2c04, receiver=0x83ff468, 
    event=0xaeff9a60) at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:732
#5  0x0807621e in QCoreApplication::sendEvent (receiver=0x83ff468, event=0xaeff9a60)
    at ../../include/QtCore/../../../../depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.h:215
#6  0xb63476d2 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, 
    data=0xb20bd428) at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:1373
#7  0xb6347967 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0)
    at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:1266
#8  0xb68a2cf0 in QCoreApplication::sendPostedEvents ()
    at ../../include/QtCore/../../../../depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.h:220
#9  0xb63833f1 in postEventSourceDispatch (s=0x83fd990)
    at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qeventdispatcher_glib.cpp:277
#10 0xb5b3e2f9 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#11 0xb5b4187b in ?? () from /usr/lib/libglib-2.0.so.0
#12 0xb5b419f8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#13 0xb63823a2 in QEventDispatcherGlib::processEvents (this=0x83fd980, flags={i = -1339805112})
    at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qeventdispatcher_glib.cpp:415
#14 0xb6343766 in QEventLoop::processEvents (this=0xb02432e4, flags={i = -1339805036})
    at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qeventloop.cpp:149
#15 0xb6343a04 in QEventLoop::exec (this=0xb02432e4, flags={i = -1339804944})
    at /home/martjone/depot/qt/qt-qml/src/corelib/kernel/qeventloop.cpp:201
#16 0xb6214de9 in QThread::exec (this=0xb20bd208)
    at /home/martjone/depot/qt/qt-qml/src/corelib/thread/qthread.cpp:490
#17 0xb7d699d8 in QDeclarativePixmapReader::run (this=0xb20bd208)
    at /home/martjone/depot/qt/qt-qml/src/declarative/util/qdeclarativepixmapcache.cpp:529
#18 0xb62199d5 in QThreadPrivate::start (arg=0xb20bd208)
    at /home/martjone/depot/qt/qt-qml/src/corelib/thread/qthread_unix.cpp:266
#19 0xb602b175 in start_thread () from /lib/libpthread.so.0
#20 0xb5e8bdae in clone () from /lib/libc.so.6