What search parameters are you using? Many listings were not showing accurately in Trulia and had, in fact, already been sold or otherwise removed from the market while still appearing as "available" homes in Trulia. This may have been addressed and corrected to some degree by the upgrade.
Lack of inventory! With the Holidays approaching many seller choose to wait until after the New Year. Banks also have not been releasing REO properties at the rate they were a few months back. If you want to see market stats, including inventory numbers, for the area you are searching take a look at the link below.