Yeah, yeah, yeah, I've read that all before. Unemployment occurs, investments take a beating, consumer spending is discouraged. To which I say:
1) There is very little evidence to support the assertion that personal consumption is discouraged when prices fall. In theory, it makes sense that people will wait if they anticipate that prices will fall further. In the real economy, that isn't want happens. The downward spiral of prices is merely the logical implication of assumptions about expectations within formal economic models. If you assume that the agents operating in an economic model suffer from expectations that are self-reinforcing, then the model will produce a downward spiral. However, economics teaches us that it is very wrong to assume.
2) Unlike personal consumption, investment is actually something that suffers during deflation. People, especially those in debt, will indeed delay purchasing real estate if they expect better prices next year. History also shows people are reluctant to buy stocks and bonds if they fear lower prices. Asset prices, while significant, are not a representation of consumer prices in the CPI.
3) It has already been explained, by me, that market forces require that wages must fall, whether in expanding economies or contracting economies. Aside from the fact that employees are reluctant to take on changes in their wages, wages already have a difficult time adjusting to changes in market forces. Because of this, employees are laid off during recessions. However, it's not the deflation that causes the unemployment, but the economic slack in the economy.
Recession -> Unemployment -> Falling Prices.