qq intl and bitdefender

I installed bitdefender and qq international ver 2 (the latest version as of today) around the same time so i can't remember which i installed first but bitdefender sees qq intl ver 2 as a virus and when it's finished processing removal, i find that outlook express is gone, volume control is gone, my sound cards driver got corrupted and this happens every time i install qq international ver 2 which i downloaded from qq's site Has anyone else had this experience? I'm on xp