Casual "you're welcome." As in "there's no need for thanks, it wasn't a hassle."

Phrase stated when posing a problem to a person to which they have no answer for you. Usually means "Forget it, I should have never asked you in the first place you chode"

Usually, this phrase is meant as a way to express insincerity, and often it is a way to tell you, that it is indeed, a problem. Whatever happened to just saying, cheerfully, "You are welcome." ? No problem does not complete the conversation, it really means, "I don't want to discuss this."