<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>to do with mini tool bar release, the only fix I can think of is to add deletes in destructors, see below:</DIV>
<DIV> </DIV><FONT size=2>
<DIV>UIMachineWindowFullscreen::~UIMachineWindowFullscreen()</DIV>
<DIV>{</DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Save window settings: */</DIV></FONT></FONT><FONT size=2>
<DIV>saveWindowSettings();</DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Cleanup machine view: */</DIV></FONT></FONT><FONT size=2>
<DIV>cleanupMachineView();</DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Cleanup menu: */</DIV></FONT></FONT><FONT size=2>
<DIV>cleanupMenu();</DIV>
<DIV></FONT><FONT color=#0000ff size=2><FONT color=#0000ff size=2>if</FONT></FONT><FONT size=2> (m_pMiniToolBar)</DIV>
<DIV>{</DIV>
<DIV></FONT><FONT color=#0000ff size=2><FONT color=#0000ff size=2>delete</FONT></FONT><FONT size=2> m_pMiniToolBar;</DIV>
<DIV>m_pMiniToolBar = 0;</DIV>
<DIV>}</DIV>
<DIV>}</DIV></FONT>
<DIV> </DIV><FONT size=2>
<DIV>UIMachineWindowSeamless::~UIMachineWindowSeamless()</DIV>
<DIV>{</DIV>
<DIV>CMachine machine = session().GetConsole().GetMachine();</DIV>
<DIV>machine.SetExtraData (VBoxDefs::GUI_SeamlessVmWindowWinID, NULL); </DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Save window settings: */</DIV></FONT></FONT><FONT size=2>
<DIV>saveWindowSettings();</DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Cleanup machine view: */</DIV></FONT></FONT><FONT size=2>
<DIV>cleanupMachineView();</DIV>
<DIV></FONT><FONT color=#008000 size=2><FONT color=#008000 size=2>/* Cleanup menu: */</DIV></FONT></FONT><FONT size=2>
<DIV>cleanupMenu();</DIV>
<DIV></FONT><FONT color=#0000ff size=2><FONT color=#0000ff size=2>if</FONT></FONT><FONT size=2> (m_pMiniToolBar)</DIV>
<DIV>{</DIV>
<DIV></FONT><FONT color=#0000ff size=2><FONT color=#0000ff size=2>delete</FONT></FONT><FONT size=2> m_pMiniToolBar;</DIV>
<DIV>m_pMiniToolBar = 0;</DIV>
<DIV>}</DIV>
<DIV>}</DIV></FONT>
<DIV> </DIV>
<DIV>you may want to attach a debugger during shutdown, it may throw all kinds of errors.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>/////////////////////////////</DIV>
<DIV> </DIV>
<DIV>QtCore4.dll!67002c03()  <BR>  [Frames below may be incorrect and/or missing, no symbols loaded for QtCore4.dll] <BR>  QtCore4.dll!670e2635()  <BR>  QtCore4.dll!670e65c3()  <BR>  QtGui4.dll!65054e68()  <BR>  msvcr80.dll!free(void * pBlock=0x04307ba8)  Line 115 + 0x5 bytes C<BR>  QtGui4.dll!6504769d()  <BR>  QtCore4.dll!670e2f77()  <BR>  QtGui4.dll!65054de8()  <BR>  QtCore4.dll!670f2c29()  <BR>  QtCore4.dll!670d7344()  <BR>  QtGui4.dll!6532a0be()  <BR>  VirtualBox.exe!VBoxMiniToolBar::~VBoxMiniToolBar()  + 0xd4 bytes C++<BR>  VirtualBox.exe!VBoxMiniToolBar::`scalar deleting destructor'()  + 0x8 bytes C++<BR>  QtCore4.dll!670e2f77()  <BR>  QtGui4.dll!65054de8()  <BR>  VirtualBox.exe!QWidget::`scalar
 deleting destructor'()  + 0x9 bytes C++<BR>  QtCore4.dll!670e2f77()  <BR>  QtGui4.dll!65054de8()  <BR>  VirtualBox.exe!UIMachineWindowSeamless::~UIMachineWindowSeamless()  Line 126 + 0x4b bytes C++<BR>  VirtualBox.exe!UIMachineWindowSeamless::`scalar deleting destructor'()  + 0x8 bytes C++<BR>  VirtualBox.exe!UIMachineWindow::destroy(UIMachineWindow * pWhichWindow=0x050bbb44)  Line 76 C++<BR>  VirtualBox.exe!UIMachineLogicSeamless::cleanupMachineWindows()  Line 212 + 0x6 bytes C++<BR>  VirtualBox.exe!UIMachineLogicSeamless::~UIMachineLogicSeamless()  Line 57 C++<BR>  VirtualBox.exe!UIMachineLogicSeamless::`scalar deleting destructor'()  + 0x8 bytes C++<BR>  QtCore4.dll!670e2f77()  <BR>  QtCore4.dll!670e6881()
  <BR>  VirtualBox.exe!UIVisualStateSeamless::~UIVisualStateSeamless()  Line 251 + 0x10 bytes C++<BR>  VirtualBox.exe!UIVisualStateSeamless::`scalar deleting destructor'()  + 0x8 bytes C++<BR>  VirtualBox.exe!UIMachine::~UIMachine()  Line 320 C++<BR>  VirtualBox.exe!UIMachine::`scalar deleting destructor'()  + 0x8 bytes C++<BR>  VirtualBox.exe!UIMachine::closeVirtualMachine()  Line 403 C++<BR>  VirtualBox.exe!UISession::sltCloseVirtualSession()  Line 953 C++<BR>  VirtualBox.exe!UISession::qt_metacall(QMetaObject::Call _c=InvokeMetaMethod, int _id=17, void * * _a=0x0012d820)  Line 111 C++<BR>  QtCore4.dll!670e4f55()  <BR>  QtCore4.dll!670e8c36()  <BR>  QtCore4.dll!670e272e()  <BR>  QtCore4.dll!670d383d()  <BR>  QtCore4.dll!67129f93()
  <BR>  QtGui4.dll!65015e18()  <BR>  QtGui4.dll!65019f8e()  <BR>  QtGui4.dll!65051861()  <BR>  QtGui4.dll!65052fd5()  <BR>  VirtualBox.exe!VBoxQGLOverlay::repaintMain()  Line 4353 C++<BR>  VirtualBox.exe!VBoxQGLOverlay::onVHWACommandEvent(QEvent * pEvent=0x043b20b0)  Line 4282 + 0x12 bytes C++<BR>  VirtualBox.exe!UIMachineView::event(QEvent * pEvent=0x670071d0)  Line 709 C++<BR>  msvcr80.dll!free(void * pBlock=0x011e1760)  Line 115 + 0x5 bytes C<BR>  QtCore4.dll!670d31fe()  <BR>  QtCore4.dll!670d5079()  <BR>  QtCore4.dll!670f4a43()  <BR>  QtGui4.dll!6523200e()  <BR>  QtGui4.dll!65242f80()  <BR>  QtGui4.dll!65244f64()  <BR>  QtGui4.dll!6523200e()  <BR>  QtGui4.dll!65242f80()
  <BR>  QtGui4.dll!65244f64()  <BR>  <A href="mailto:user32.dll!_RealSystemParametersInfoW@16">user32.dll!_RealSystemParametersInfoW@16</A>()  + 0x6a bytes <BR>  uxtheme.dll!_InternalSystemParametersInfo()  + 0x2b bytes <BR>  <A href="mailto:uxtheme.dll!_ThemeSystemParametersInfoW@16">uxtheme.dll!_ThemeSystemParametersInfoW@16</A>()  + 0x50 bytes <BR></DIV></td></tr></table>