[trunk] musescore freezes when I open a score from musescore connect

I use musescore trunk revision 5127 on mageia 1 32 bits.
When I open the following score via musescore connect (http://musescore.com/user/18351/scores/31914), musescore freezes.
Here is a gdb trace after a ctrl+C (several ctrl+C lead to the same gdb trace).

#0 0xffffe424 in __kernel_vsyscall ()
#1 0x448e8fd6 in poll () from /lib/i686/libc.so.6
#2 0x449e2c30 in ?? () from /usr/lib/libxcb.so.1
#3 0x449e4ba4 in xcb_wait_for_reply () from /usr/lib/libxcb.so.1
#4 0x44a3d9b2 in _XReply () from /usr/lib/libX11.so.6
#5 0x44a215a7 in XGetImage () from /usr/lib/libX11.so.6
#6 0x47873e1d in QX11PixmapData::toImage(QRect const&) const () from /usr/lib/libQtGui.so.4
#7 0x4786faed in QX11PixmapData::toImage() const () from /usr/lib/libQtGui.so.4
#8 0x4785a73d in QPixmap::toImage() const () from /usr/lib/libQtGui.so.4
#9 0x478a30c6 in QBrush::textureImage() const () from /usr/lib/libQtGui.so.4
#10 0x47967dd1 in ?? () from /usr/lib/libQtGui.so.4
#11 0x47968b44 in ?? () from /usr/lib/libQtGui.so.4
#12 0x47968e56 in ?? () from /usr/lib/libQtGui.so.4
#13 0x478cb043 in QPaintEngineEx::draw(QVectorPath const&) () from /usr/lib/libQtGui.so.4
#14 0x478cdd7c in QPaintEngineEx::drawPath(QPainterPath const&) () from /usr/lib/libQtGui.so.4
#15 0x478de5a1 in QPainter::drawPath(QPainterPath const&) () from /usr/lib/libQtGui.so.4
#16 0x478dc21c in ?? () from /usr/lib/libQtGui.so.4
#17 0x478de21c in QPainter::drawRects(QRectF const*, int) () from /usr/lib/libQtGui.so.4
#18 0x478de396 in QPainter::fillRect(QRectF const&, QBrush const&) () from /usr/lib/libQtGui.so.4
#19 0x4ad7ca00 in ?? () from /usr/lib/libQtWebKit.so.4
#20 0x4ac25c86 in ?? () from /usr/lib/libQtWebKit.so.4
#21 0x4ac232f3 in ?? () from /usr/lib/libQtWebKit.so.4
#22 0x4acc3391 in ?? () from /usr/lib/libQtWebKit.so.4
#23 0x4acb2c8b in ?? () from /usr/lib/libQtWebKit.so.4
#24 0x4acb3303 in ?? () from /usr/lib/libQtWebKit.so.4
#25 0x4ac9e512 in ?? () from /usr/lib/libQtWebKit.so.4
---Type to continue, or q to quit---
#26 0x4ac8ec14 in ?? () from /usr/lib/libQtWebKit.so.4
#27 0x4acf2328 in ?? () from /usr/lib/libQtWebKit.so.4
#28 0x4acf1abd in ?? () from /usr/lib/libQtWebKit.so.4
#29 0x4acf1abd in ?? () from /usr/lib/libQtWebKit.so.4
#30 0x4acf24c9 in ?? () from /usr/lib/libQtWebKit.so.4
#31 0x4abedaef in ?? () from /usr/lib/libQtWebKit.so.4
#32 0x4adb57b9 in ?? () from /usr/lib/libQtWebKit.so.4
#33 0x4adb59a3 in QWebFrame::render(QPainter*, QRegion const&) () from /usr/lib/libQtWebKit.so.4
#34 0x4add0ab2 in QWebView::paintEvent(QPaintEvent*) () from /usr/lib/libQtWebKit.so.4
#35 0x477c914a in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#36 0x4add0b8f in QWebView::event(QEvent*) () from /usr/lib/libQtWebKit.so.4
#37 0x4776dbc4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#38 0x47772c54 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#39 0x43b3e1ae in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#40 0x477c5de2 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#41 0x479b8eef in ?? () from /usr/lib/libQtGui.so.4
#42 0x477bafeb in QWidgetPrivate::syncBackingStore() () from /usr/lib/libQtGui.so.4
#43 0x477c9c1a in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#44 0x47c0269c in QMainWindow::event(QEvent*) () from /usr/lib/libQtGui.so.4
#45 0x4776dbc4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#46 0x47772c54 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#47 0x43b3e1ae in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#48 0x43b41f4c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /usr/lib/libQtCore.so.4
#49 0x43b4209c in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
---Type to continue, or q to quit---
#50 0x43b6cf04 in ?? () from /usr/lib/libQtCore.so.4
#51 0x44d064d9 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#52 0x44d06ce0 in ?? () from /lib/libglib-2.0.so.0
#53 0x44d06f9a in g_main_context_iteration () from /lib/libglib-2.0.so.0
#54 0x43b6d08b in QEventDispatcherGlib::processEvents(QFlags) ()
from /usr/lib/libQtCore.so.4
#55 0x4782571a in ?? () from /usr/lib/libQtGui.so.4
#56 0x43b3d3bd in QEventLoop::processEvents(QFlags) ()
from /usr/lib/libQtCore.so.4
#57 0x43b3d639 in QEventLoop::exec(QFlags) () from /usr/lib/libQtCore.so.4
#58 0x43b42170 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#59 0x4776b944 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#60 0x086231bf in main (argc=1, av=0xbfffee64)
at /home/collette/repositories/mscore/mscore/mscore/musescore.cpp:2305