I just inserted a blank Sega Dreamcast GD-R into my Dreamcast & turned it on. Soon after I powered it, I could hear how fast the GD was spinning. I swear, it was spinning so fast, when I tried to open the top tray, it took nearly 5 secs to even start opening. My Dreamcast nearly overheated! I think it's the GD's fault. If anyone has a blank GD-R & a Dreamcast, try this (at your own risk)...