I think it depends where you live. Here in London, my properties have increased in value by about 10% over the last 2 years, but two properties I own in Leicester have dropped by between 12% and 15%.
I think it's hard to predict the market, but I think it is getting harder to sell your home, as people are waiting for a crash before they buy, the property will only be worth as much as people are willing to pay. My neighbour has had his place on the market for about 6 months, no one seems interested.