Most communities in Hartford County have gone down about 10%/year. Glastonbury still has a market that is selling but the average days on market appears to be longer then what we were seeing last year. (depending on price range) If you are thinking of selling, homes that are priced correctly for current market conditions are selling. Buyers with good credit are getting mortgage approval and they are out there because the mortgage rates are so low. Don't let the media scare you - they tend to make generalizations and don't focus in on the good - and there is good out there.
Essentially, if the houses that sold in 2006 and 2008 were exactly the same, expect less than an average of 3% decline. Depends on the price range, though.
My blog post below gives you more info...
Let me know if you have any questions.