Mine too! It takes almost 3 minutes normally, and 6-8 if it's big. I'm using a regular DS Lite & retail Cart too! Now it's freezing...should I send it back to Nintendo?
@Maximumbeans, Indeed. I've been working on getting this Infecutus chip to work on my PS2. But after soldering, I realised that a plastic piece was missing from the power ribbon cable to the power and eject buttons.