I did a post about superluminal communication before (I think) but it is impossible (at least according to our current understanding of physics). I totally agree that it shouldn't take that long to send messages and it WILL become a problem when we actually start exploring space in full swing.

I think, if and when we develop the ability to make a wormhole, we could send messengers through it right on a ship, maybe? That would be such a cool job!