It is, and yes, I have. Many souls linger because they have regrets, or things they hold onto that they're not ready to let go of just yet.

[ It's tragic, sometimes, hearing their stories, but such is the life of a shinigami. Rukia's got a lot more going on than just this, though, thanks to a certain human having discovered her presence back at home...but she'll save that for another time. ]

I can't say for sure if such a thing exists in your world, but it's entirely possible. Unless you have a certain amount of spiritual energy, you most likely wouldn't be able to see any of this happening.