Perhaps the Washington Post's recent report that August 2007 sales prices rose "25.7 percent in Arlington County, where condominium sales were strong," helped light a fire under potential sellers in Arlington County. According to ZipRealty, in the last seven days 149 houses were newly listed in Arlington, out of a total of 991 that currently are for sale. (Arlington's inventory will be interesting to keep an eye on).
A few things the Washington Post didn't mention about August's Arlington sales:
I'll post same-house "on the market" sales for Arlington County tomorrow. The new crop of sellers seem to be optimistic on asking prices.