Write Conflict in the update Trigger

Record was not updated because of a write conflict.
Fields with conflicts:

Field Name  Current Value
Stored in Table Original Value in Field Updated_On  02/08/2013 12:08:21 24 pm   02/08/2013 12:00:00 00 am

IF(UPDATE(Interview_Date_And_Time))
BEGIN
INSERT INTO Interview_History(Interview_Id,Column_Name,Old_Value,New_Value,Updated_On,Updated_By) VALUES (@InterviewID,'Interview Date And Time',@OldValueInterviewDateAndTime,@InterviewDateAndTime,@UpdatedOn,@UpdatedBy);
END