Exception in IE (0x8001010D: An outgoing call cannot be made since the application is dispatching an input-synchronous call)

1. Build grapher sample qtbrowserplugin with (qtbrowserplugin-2.3_1 and Qt 4.5.3) and link either static or shared.
2. Use the resulting plugin in IE 8 on Vista (or any windows and IE) from VisualStudio 2008 debuger.
3. Observing the debug output window. The first-chance exception are output when clicking the plugin or changing the bar style. This error is not always been observed but can be seen very easily.

We've have the same problem with our browserplugin on IE on Windows. VS2008 reports this exception when a Qt button or menu item is clicked. It is causing IE with our plugin crash randomly. It looks like there are some issues with ActiveQt framework. There is no such problem when the same plugin is used with FireFox on Windows.