New error message

My pokertracker was fine last night. I opened it today and instead of the auto import starting I got this message. Any idea why?
2008/05/27 20:48:52: Unable to begin feeder import process. Reason: Unable to login to database (PT3 DB). Reason: could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "localhost" and accepting TCP/IP connections on port 5432?
2008/05/27 20:48:58: Unable to begin feeder import process. Reason: Unable to login to database (PT3 DB). Reason: could not connect to server: Connection refused (0x0000274D/10061)
2008/05/27 20:48:52: Unable to begin feeder import process. Reason: Unable to login to database (PT3 DB). Reason: could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "localhost" and accepting TCP/IP connections on port 5432?
2008/05/27 20:48:58: Unable to begin feeder import process. Reason: Unable to login to database (PT3 DB). Reason: could not connect to server: Connection refused (0x0000274D/10061)