Note: How do we calculate the data of "weighted defect density plus"? We define a weight for each severity. The sum of these weights for all open bugs divided by total open project bugs are the data we record. The weight we use for each severity: Critical:10, Major:7, Normal:5, Minor:3, Enhancement:0, Janitors:0 This is intended to indicate if the general defect density is increasing or not as the project as a whole grows.