You could also see this message: "The log scan number (440:287:1) passed to log scan in database is not valid. This error may indicate data corruption or that the log file (.ldf) does not match the data file (.mdf). If this error occured during replication, recreate the publication. Otherwise restore from backup if the problem results in a failure during startup"
If you receive this error it is recommended that you restore a current backup of your database.