We had our house on the market for 18 months. We tried everything, including a St. Joseph statue (and we are atheists). DH had accepted a job, and we did get an offer on our house, but it fell through at the last minute (we went into sign the papers and there was no funding on the other side). We rented it to the potential buyer and had to move as we had another house under contract. We were assured that the funding would come through, but it never did. We took the house off the market for six months and have now just put it back on for a short sale. It is currently on the market for 10k less than what we bought it for, but 80k less than what we owe because we refinanced at the height of the boom. Our renter is putting in an offer for 25k less than that, so if the bank accepts it we will have sold it for 105k less than what we owe on it. We are only doing this because we can no longer afford to pay two mortgages (the rent was covering barely half the mortgage). I doubt that the debt will be forgiven, but if it is, we will owe a bunch in taxes (we normally get 5k back every year). If the debt is not forgiven we will have to file for bankruptcy.
So, if you can keep making it in your house, I strongly suggest that you do.