My understanding is that Trulia receives its feed primarily from local MLS, company websites and agent websites with syndication. There is a delay when the information is changed in your local MLS system. Check with your agent to ensure that the information is correct in your local MLS; If the info is correct, wait 5-7 days to see if the data changes on trulia. If the info has not been modified in your local MLS, get on your agent to get it done.
Jason Ewing, GRI/CNS
Coldwell Banker Triad, Realtors