Silicon Valley Affordable?

For a long time, Silicon Valley has been one of the most expensive areas in areas in the country for home buyers. While that's not exactly about to change, things are looking pretty different around here. In Santa Clara County, one fifth of the houses for sale are now priced at or lower than $450,000. For many people, that number is nowhere near "affordable" but prices like this haven't been seen in this area since 2005.  That means people with incomes of around $115,000 can afford to buy in this area. What's your opinion on falling house prices?