I just downloaded Silent Boot from the market. I then turned off my phone. I turned it on again, and now I have a black screen with the bottom keys/buttons lit up. The phone vibrates every few seconds.
This is the second time this has happened in the last 2 weeks. Today was the first time I have ever installed Silent Boot.
Also, I just unplugged my phone from the charger, so it is fully charged.
What smon said. Unfortunately I'm not sure if a new phone fixes this or not. I'm hoping it's a software glitch and 2.3 fixes it.