So I got iOS 4.0 installed and jailbroken on my Touch 2G no problem. Everything was running fine for a while. Installed some apps from App Store and Cydia. All the sudden, I'm just browsing around Cydia and the screen goes blank. I try to turn it back on and the backlight turns on but nothing is displayed. I desperately try everything known to man to reboot. Plugging it into my computer causes the screen to turn green. Long story short, I was eventually able to reboot, but now this happens every time I go into Cydia. Looks like it's time to restore.