Originally Posted by landovr
I'm convinced that this problem is related to wifi. With wifi on, my wifes phone has the black screen problem many times a day but with wifi turned off it does not happen.
On my phone, it always happen when I am using the Market app. The app with the new look on Android 2.3 is slow to start, most of the times it won't download apps unless you turn off the screen and turn it back on and worst of all, suddenly the wi-fi goes out and IF you turn off the screen, then the phone hangs and you must reboot. When I see that the wi-fi has just disconnected, I turn off the phone with the power button and restart it. Saves having to pull the battery but is still very annoying