Guys, i dunno if any of u happen to experienced this. Last nite my friend was using my phone to play a game, to be exact it was Platinum Sudoku.

. then suddenly the game hanged/freezed. i tried to push the power button, the menu appeared. and i press application button (the button between C and right selection button), the menu also seems to appeared.
So i stop the game. and i tried to run the game again and a message said "Operation failed." appeared. And all the games that i installed in the memory card corrupted, cant run. At that time my friend was already freak out. She was like, "OMG, I screw up a phone worth two grand, ill never gonna touch that again"
I oso tried to view the pictures in the memory card but nothing there. When i tried to view memory card files using File Manager, message "Memory card not connected" came out.
So I shut down the phone. take out the memory card and replace it in again, and turn the phone on. and the phone was normal again.
Hope that would be the last time it happened. Just to share some.

go similar experince ... it was happen last time ... after i download ...a lot of mp3 into the phone from usb cable using file manager ....after disconnect it with computer .. i try open the mp3 folder, and it show nothing inside ... and i try open video folder ( have a few mp4 inside, is mv) also show nothing inside ... then i restart the phone ... everything back to normal ....
donno is firmware problem, M2, or others thing cause it happen ... weird ....