I'm having the same issue. Sometimes if I let the mod sit for a while and it turns off (completely turns off, not just the screen going dark), it will refuse to turn back on. Plugging it in to a USB power source will wake it back up, but that's a horrible "fix" to the problem. Firmware version is 1.1 SP33 INT, with revision code: 311103368
I actually jumped on here to see if they posted patch notes for the latest firmware revision to determine if the issue had been addressed before I installed it...
