There could be some stability issues on the video card side--the 560 series is not officially supported yet (SE hasn't done any driver testing with it yet, and they have already acknowledged there are issues with them in another thread).

Could also be some issues with your sound card/driver/management software as well (might want to post these details). There have been reports of issues with people who are setup with the Soundblaster software running on chips that are not actually branded as Creative Labs hardware (ie: Realtek can run the Sounblaster Emulation for a pseudo Xi-Fi experience, but it isn't actually hardware XiFi, but software emulation).