Delay in IE8 with script run

Hi all!

I created activeX control.
It's a browser plugin for ie/ff/chrome and other browsers.

http://www.program-ace.com/ace3ddemos

This plugin contains auto-update method. Algorithm is next:

1. Check version of plugin on server;
2. Check version of local installed plugin;
3. Compare versions and if it's different then download plugin installation from server;

So, when I try to download plugin from server I call browser script. For some time it works on all browsers. But after last ie and ff update, my script is not running. I updated my plugin for new xul-sdk. Now plugin normally calls scripts from ff/opera/chrome etc. But in IE it calls script with a delay about minute or two :(

I call script from browser for ie hereby:

LPDISPATCH pScript = NULL;	if( FAILED( pHtmlDoc->get_Script( &pScript ) ) || !pScript )		return false;	pScript->AddRef();	DISPID funcID;	HRESULT hr;	LPOLESTR funcStr = const_cast<LPOLESTR>(func);	hr = pScript->GetIDsOfNames( IID_NULL, &funcStr, 1, LOCALE_SYSTEM_DEFAULT, &funcID );	if( SUCCEEDED( hr ) )	{		VARIANT result, arg;		DISPPARAMS args;		ZeroMemory( &args, sizeof(DISPPARAMS) );		if( param )		{			arg.vt = VT_BSTR;			arg.bstrVal = ::SysAllocString( param );			args.cArgs = 1;			args.rgvarg = &arg		}		hr = pScript->Invoke( funcID, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_METHOD, &args, &result, NULL, NULL );		if( param )			VariantClear( &arg );}	pScript->Release();

Please help to resolve this problem.