Especially if you don't save in the right places. I've done that often in KQV, by doing stuff like keeping one save.
Once I saved going into the Inn outside the village IN KQ5 as long as I possibly could, then I went into it without a hammer, and saved the game! Needless to say, I was very trapped, after playing through half the game (it's a good thing V is my favorite, and I enjoy playing it so much).
This is why I usually fill up my save spaces on just one game if I don't know it very well.