it doesn't happen to me quite often. I do drop games and wont touch them for a long time then pick it up a few months later like nothing happened. When i was playing bioshock 1 trying to get the brass balls achievement(beat the game without vita chambers) i played about 4 hours without saving, i died and lost all of my work. so i put the game away for about 5 months then picked it up and finished the game.