[omniORB] load dll and free dll error

[zhuxyzabc@21cn.com]

Dear sir,
  I load omnithread2_rt.dll and free it many times. But there is error.
 int main(int argc, char* argv[])
{
  HINSTANCE hEcho;

  for ( int j=0 ; j< 100; j++)
 {
	
     hEcho =  ::LoadLibrary( "omniorb280_rt.dll"); 
	
     if ( hEcho )
    {	
        cout << j << "," << hEcho << endl;
	::FreeLibrary( hEcho );
     }
     else
    {
      //when j == 72, error occur
      //error code=1144 (DLL init error)
       cout<< GetLastError()<< endl;
    }
 }
 return 0;
}

 what's wrong with it?
thanks
zhu zhong hua

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