I am using Registry Mechanic 6.0.Lately, it has not repaired all the errors. For example, I will scan. It finds 3 errors. I delete them and then run the scan again. It finds the exact 3 errors again. After running this 3 times, I am wondering if I need to change registry cleaners or just go without. Is it absolutely necessary to have a registry cleaner if I’m using Windows XP sp2 and do the maintenance on a routine basis?